Maths - algebra question?
917059
2b/9 + 3b/18\nFind a common denominator:\n4b/18 + 3b/18\nAdd:\n7b/18\n\nNot much to explain, really...
134065
Your statement translates to the following algebraic equation.\na+b=a-b=a*b\nSolving a+b=a-b, we get b = 0; \nSubstituting b=0 and solving a+b=a*b, we get a = 0;\nSo the two numbers are zeroes.
817461
a^4 - b^4\n\n= (a^2 + b^2)(a^2 - b^2)\n\n= (a^2 + b^2)(a + b)(a - b)
533029
Let's call :\n(a) : x + 2y < 3\n(b) : 2x - 3y < 6\n\nWith the 1st one:\nx + 2y < 3\n<=> 2x + 4y < 6 \n\nThe 2nd one is 2x - 3y < 6\nThat means : \n(a) - (b)\n<=> 4y - (-3y) < 0 \nor 7y < 0 \nor y < 0\n\nWe have also: 2x - 3y < 6 <=> (2/3).2x - (2/3).3y < (2/3).6\n<=> (4/3)x -  2y < 4\nThat means:\n(a) + (b)\n<=> x + (4/3)x < 7\n<=> (7/3)x < 7\n<=> x < 3\n\nSo : x < 3 and y < 0
938878
x^2 - 2(3-x^2)\nDistribute the -2\nx^2 + (-2)(3) + (-2)(-x^2)\nSimplify\n= x^2 - 6 + 2x^2\nCombine like terms\n= 3x^2 - 6
139883
(a+b)(a-b) \n= a^2 - ab + ba - b^2\n= a^2 - b^2 -ab +ab\n= a^2 - b^2
191567
Please use parentheses to explain the problem more effectively. Assuming the problem as,\n\n(x-1)/2x + x/(x+3)\n\nThe solution can be,\n\n(3x^2+2x-3)/(2x^2+6)
859744
(x + 4y)(x - 4y)\nI answered 2 of your questions. Do the rest of the questions yourself.
757614
4 (x^2 + 3X -4)\n4(x+4)(X-1)
516699
its D!!\n\nA) 4+8X=0\n  -4   -4\n ----------\n   8X= -4\n  ---  ---\n   8    8\n\n   x= -4/8 or X= -1/2\n\n\n\nB) X= -1-X\n  +X    +X\n -----------\n  2X= -1\n ---  ---\n  2    2 \n\n  X= -1/2\n\n\n\nC) -2(x-2)=5     negative times(x) a negative is a positive\n   -2x+4  =5     negative times(x) a positive is a negative\n      -4  -4\n -------------\n   -2X= 1\n   --- ---\n   -2   -2\n\n     X= -1/2\n\n\nD)  -3X= 6\n    --- ---\n    -3   -3\n\n   X= -2\n\n\n\nits sad most ppl got this wrong?? is this Geometry?? or Algebra??
602488
1-x = -(x-1)\nx^3 - 1 = (x-1)(x^2+x+1)\nAnswer: -(x-1)(x^2+x+1)
58450
use the distributive property (poor u, u seem to be having a lot of trouble with your math homework tonight!! hope this helps:)\n\nthe property states that a(b+c)=ab+ac, basically you take the "a" and multiply it by the other 2, or distribute it.  say a=2, b=3, and c=1.  your equation would be 2(3+1) and, using the distributive property, make it become 6+2 which equals 8.  so its the same when your using x.  3(-4x+7)= -12x+21!!! yay!! hope this helped!
1102373
i wont answer.... log onto www.mathguru.com and discover solutions with explanations.
560506
that works... so does this:\n\n-2 x -1 x 1 x 2 x 3 = 12\n\n-2*-1=2\n2*1=2\n2*2=4\n4*3=12
821450
go to a math website off yahoo. it should help.
988729
(a + b)^2 = a^2 + 2ab + b^2\n\nso\n\n(a + 1)^2 = a^2 + 2a + 1\n(a - 1)^2 = a^2 - 2a + 1\n\n\n\nFermat:\n\nIf a = 2^(n-1) then\n(a + 1)^2 = (2^(n-1) + 1)^2\n = (2^(n-1))^2 + 2(2^(n-1)) + 1\n =( 2^(n-1)^2 ) + (2^n + 1)\n\n\n\nMersenne:\n\n(2^n - 1) + (2^(n-1) - 1)^2 =\n = 2^n - 1 + (2^(n-1))^2 - 2(2^(n-1)) + 1)\n = 2^n - 1 + (2^(n-1))^2 - 2^n + 1\n = (2^(n-1))^2\n = ( (2^(n-1) - 1) + 1 )^2
700951
4x + 6 is not quite right\nwatch the order of operations and distributive properties\n\nrepost your answer and I'll tell you if you got it\n\n(you didn't think I'd just give up the answer, did you ?)