Solve for y: -2y-2 = sqrt(2y^2-7-7)?
467997
-2y - 2 = sqrt(2y^2 - 7y - 7)\n(-2y - 2)^2 = 2y^2 - 7y - 7\n(-2y - 2)(-2y - 2) = 2y^2 - 7y - 7\n4y^2 + 4y + 4y + 4 = 2y^2 - 7y - 7\n4y^2 + 8y + 4 = 2y^2 - 7y - 7\n2y^2 + 15y + 11 = 0\n\ny = (1/4)(-15 ± sqrt(137))\n\nI used www.quickmath.com to answer this quicker.
159612
Multiple the first equation by two\n-10x-8y = -22\n10x +y = -6  (second equation)\n\neliminate x\n\n-7y = -28\ny = 4\n\n10x + 4 = -6\n10x = -10\nx = -1
586962
(6y^2-3y)(y+7)-->(2y)(y-1)(y+7)\nif that helps
351633
4-y-2y=10\n4-3y=10\n-3y=6\ny=-2\n\nx=4-(-2)\nx=6
796832
5(2^2)+5(2)+2y=2\n2y=-28\ny=-14\n10x+5+y+x(dy/dx)=0\nx(dy/dx)=-10x-5-y\ndy/dx=(-10x-5-y)/x\n(-10*2-5-(-14))/2\n-11/2\ni hope thats right
809908
2(y-3) = y-6\n\nThis is what you are supposed to calculate : a value for the y, such that the equation holds.\n\nfor instance try y = 1\n\n2(1-3) = 1-6\n2 - 6 = 1- 6\nand you see that this is not so, thus y=1 is not a solution.\n\nthe standard way to solve is : move all y''s to the left of the=, and all numbers to the right of the =\n\n2(y-3) = y - 6\n2y - 6 = y - 6\n2y -y - 6 = -6 ( move left y to the right, sign changes )\n2y - y = -6 + 6 moved left -6 to right, change sign\n\ny = 0. ( adding the 2y - y together, and the -6 + 6\n\nso the solution is y = o
1116483
7y = x + 23\n(x - 2)^2 + y^2 = 25\n\n7y = x + 23\nx = 7y - 23\n\n(x - 2)^2 + y^2 = 25\n((7y - 23) - 2)^2 + y^2 = 25\n(7y - 23 - 2)^2 + y^2 = 25\n(7y - 25)^2 + y^2 = 25\n((7y - 25)(7y - 25)) + y^2 = 25\n(49y^2 - 175y - 175y + 625) + y^2 = 25\n49y^2 - 350y + 625 + y^2 = 25\n50y^2 - 350y + 600 = 0\n50(y^2 - 7y + 12) = 0\ny^2 - 7y + 12 = 0\n(y - 4)(y - 3) = 0\ny = 4 or 3\n\nx = 7y - 23\nx = 7(4) - 23\nx = 28 - 23\nx = 5\n\nor\n\nx = 7(3) - 23\nx = 21 - 23\nx = -2\n\nANS : (3,-2) and (5,4)
421517
y-y^1=m(x-x^2)\ny-8=2(x-(-2)\ny-8=2(x+2)\n A is the correct answer.\ny-8=2x+4\ny=2x+4+8\ny=2x+12 >> y form\n(transpose)\n-2x+y=12\n(if the variable x is negative make it positive)\n-(-2x+y=12) \n2x-y=-12 >> standard form
697044
(y+10)^2-72=0 \n(y+10)^2 = 72\ny+10 = +- sqrt(72)\ny= -10 +- sqrt(72)\n-10 + sqrt(72), -10 - sqrt(72)\ns
364921
Solve for y\nSubtract 2x from each side\n-8y = -2x + 7\nDivide everything by -8\n-8y/(-8) = -2x/(-8) + 7/(-8)\ny = (1/4)x - 7/8\nFor the equation y = mx + b, the slope is m.\nAnswer: slope = 1/4
1117529
y = 3x^2 + 12x - 7\nWhat do the directions say?
683580
y^2 + 7y + 3y + 21\ny^2 + (7 + 3)y + 21\ny^2 + 10y + 21\n(y + 7)*(y + 3)
641389
8Y(2Y-1)=0\n16Y^2-8Y=0\n16Y^2=8Y\n16Y^2/y=8Y/y\n16Y=8\nY=8/16 or 1/2
801041
Notice x = -3 + 3y (based on your second equation), so substitute this for x into your first equation to solve for y:\n\n-2x + 7y = 10\n\n-2(-3 + 3y) + 7y = 10\n\n6 - 6y + 7y = 10\n\n6 + y = 10\n\ny = 4\n\nNow plug this into the other equation to solve for x:\n\nx = -3 + 3y\n\nx = -3 + 3(4)\n\nx = -3 + 12\n\nx = 9\n\nANSWER:  x=9, y=4\n\nNRT
940849
2x + 4y = -6\nX - 3y = 7 multiply by two\n\n2x + 4y = -6\n2x - 6y = 14\n{subtract equation 2 from equation 1}\n\n2x - 2x + 4y - (-6y) = -6 - 14\n10 y = -20 divide by 10\ny = -2\n\n\nplug into a equation \n2x - 6(-2)  = 14\n2x + 12 = 14\n2x = 2\nx = 1\n\nx = 1, y = 2
714041
10x+4y+4\n\nor can be written as y= -2.5x-1
287717
-4y^+8y+3y^2-6\n-4y(y^2-2)+3(y^2-2)\n(-4y+3)(y^2-2)\n\ndoes that make sense?