If x & y = x2 + 3y, what is the value of x2 & 3y?
817027
What does the & stand for?\nAssunming & stands for an unknown operation\n\nLets see what happened when we &'d the first two\n\nx came out to be x^2 and y came out to be 3y\n\nso the first term x was squared and the second term y was multiplied by three\n\nThus when we & x^2 and 3y the same thing shopuld happen\n\nx^2 is squared and 3y is multiplied by 3\n\nthus we get\n\nx^(2*2) + 3*3y or x^4 + 9y\n\nHope this helped
781563
y>(12-3x)/4\n\nSteps:\n\nmultiply the 12 on both sides\n3x+4y>12\n\nminus the 3x isolating the y variable\n4y>12-3x\n\ndivide by 4 on both sides to get y by itself\ny>(12-3x)/4 or...\n\nsimplified 3-(3x/4)
639859
its simple..see\n\n2x + 3y = 1 -------- 1st expression\n5x + 3y = 16 ------- 2nd expression\n\nnow..first take 1st expression\n\nStep 1: 2x + 3y = 1\n        2x = 1 - 3y\n        x = (1 - 3y) / 2  -------- this is value of x\n\nnow..take 2nd expression\n\nStep 2: 5x + 3y = 16\n        5(1 - 3y) / 2 + 3y = 16  ---here put the value of x\n        2.5(1 - 3y) + 3y = 16\n        2.5 - 7.5y + 3y = 16\n        2.5 - 16 = 7.5y - 3y\n        -13.5 = 4.5y\n        y = -13.5 / 4.5\n        y = -3 ------ this is value of y\n\nNow again put the value of y in the 1st expression\n\nStep 3: 2x + 3y = 1\n        2x + 3(-3) = 1\n        2x - 9 = 1\n        2x = 1 + 9\n         2x = 10\n         x = 10 / 2\n         x = 5\n\nSo, final value of x = 5 and value of y = -3 \n\nHope ya understand ;-)
843483
using (x+y)^3 = x^3+3x^2y+3xy^2+y^3\n\nwe get (2a+b)^3 = 8a^3+12a^2b+6ab+b^3\n\n(ab+c)^3 = a^3b^3+3a^2b^2c+3abc^2 + c^3\n\n(6ab-c)^3 = 216a^3b^3-108a^2b^2c+18 abc^2 - c^3
851885
You have :\n | x+4y   =12\n | 2x-3y  =6\n<=>\n | 2x+8y=24  \n | 2x-3y=6              \n<=>  \n | 11y=18\n | x+4y=12\n<=>\n | y=18/11\n | x=12-4(18/11)=60/11\n\nFinally, we have (x=60/11) and (y=18/11) .\n ^_^
863140
First, you multiply the top equation by 2, to get:\n\n2x+2y = 8\n2x - y = 2\n\nThen, subtract the top equation with the bottom equation.  That is,\n(2x+2y) - (2x - y) = 8 - 2\n2x + 2y - 2x + y = 6\n3y = 6\ny = 2\n\nNow that you know the value of y, you can now solve for x, using any one of those two equations.  Let's use the second one.\n\n2x - y = 2\n2x - (2) = 2\n2x - 2 = 2\n2x = 4\nx = 2\n\nTherefore, x=2 and y=2 is the solution.
1094320
x + y = 13\n2x - 3y = 1\n\nx = 13 - y\n\n2(13 - y) - 3y = 1\n26 - 2y - 3y = 1\n26 - 5y = 1\n-5y = -25\n\ny = 5\n\nx = 13 - y\nx = 13 - 5 = 8\n\nx =  8\ny = 5
446101
switch the y and x\n\nx = 2y - 3\n\nThen solve for y\n\nx + 3 = 2y\n\n(x+3)/2 = y\n\nnow you have the inverse.
1027060
=IF(AND(A=[condition], B=[condition]),X,Y)\n\nAND will return true if both conditions are satisfied.
737079
If the x2 mean x squared?\n\n4x^2 + 3x + 6
589798
y' = 2x - 2\n2x - 2 = 0\n2x = 2\nx = 1
1028088
x=y+150\n\nYou will need another statement with x & y or just insert a value for x or y and resolve the question above.
701107
4x +y = 16   ;2x + 3y = 24      Multiply the 2nd with -2, that gives -4x -6y = -48    Add the two:   0x - 5y = -32  \nDivision by -5 gives  y = 6,4\nInsert this value into the first equation:   4x + 6,4 = 16\n4x = 9,6 ;    x = 2,4\n\nNumber 2 is even easier:\nMultiply the first equation by 2 and add the equations.\n24x + 2y = 50    plus   8x - 2y = 14  gives  32x = 64; x = 2\nYou can now choose:  24 + y = 25  or  16 - 2y = 14\n(That you get when you replace in the original equations \nx by 2)  Anyhow you'll find   y = 1
978183
y = 8\n\n2 + 3y\n\n2 + 3(8)\n\n2 + 24\n\n26\n\nThe answer is 26\n\n-- - - - - - - - - - - s-
152532
y = 4x - 3 and y = 5x - 1, so\n4x - 3 = 5x - 1 (I substituted the value of y in the first eq'n to the second eq'n)\n-x = 2\nx = -2\ny = 4(-2) - 3\ny = -8 - 3\ny = -11\n;-)
844586
9x^2+y^2=9......(eqn no 1)\n3x-y=3 .............(eqn. no. 2)\nFrom equn. no. 2,we get y=3x-3=3(x-1)\nPutting the value of y in eqn.no.1,w get\n9x^2+{3(x-1)}^2=9\n=> 9x^2+9(x^2-2x+1)=9\n=>9x^2+9x^2-18x+9=9\n=>18x^2-18x=0\n=>18x(x-1)=0\nTherefore either 18x=0 or x-1=0\ntherefore x=0 or 1\nPutting the value of x in eqn no 2,we get 3X0-y=3 or y=-3  or 3X1-y=3,in which case y=0 \nTherefore x=0,y=-3 or x=1 and y=0
913572
switch x and y\nx=1/2y-3/2\n1/2y=x+3/2\ny=2x+3