subtract (5x^2-3x +6) - (9x^2 - 5x -3)?
458594
you subtract like terms.  \n5x^2 - 9x^2 = -4x^2\n-3x - (-5x) = -3x+5x = 2x\n6 - (-3) = 6+3 = 9\n\nTherefore, the final answer is -4x^2 +2x +9
957836
4x+(-5y)+(-6x)+3y\n4x+(-6x)+(-5y)+3y\n=-2x-2y
1035131
i think you made an arithmetic error in the first step.\n\nstart with: |5x - 3| + 8 = 22\nthen subtract 8 from both sides, and you will get\n|5x-3| +8 - 8 = 22 - 8\n|5x-3|  = 14\nand not |5x - 3| = 24\n\nfrom there:\n|5x-3|  = 14\n5x-3 = 14 or 5x-3= -14\n5x-3+3=14+3  or 5x-3+3= -14+3\n5x = 17 or 5x = -11\nx = 17/5 or -11/5
887284
Subtracting, and adding a negative #, are the same thing. So this equation can also be expressed as:\n(-5x + 6) - (-2x + -7)\nThe negative after the last part of the function, effectively reverses the negatives inside the parenthesis:\n(-5x +6) + (2x + 7)\nFrom there, since this is just addition and subtraction, you can just remove the parenthesis:\n-5x + 6 +2x + 7\nCombine like terms and you've got:\n13 - 3x
1019688
(x - 2)*3 = 6 + x\n\n3x - 6 = 6 + x\n\n2x = 12\n\nx = 6
492288
x=\n3x-3+2x=5x-6-x\n3x+2x-5x+x=-6+3\n1x=-3\nx=-3&#92;1\nx=-3
94205
@Start:\n9-3x = 15-4x\n@Subtract 9 from both sides:\n-3x = 15-9 -4x\n-3x = 6-4x\n@Add 4x to both sides\n-3x + 4x = 6\nx = 6\n\n@always check your answer:\n9-3*6 = 15 - 4*6\n9-18 = 15-24\n-9 = -9\n\nYep!
87719
x^2 + 9x + 10x + 90\n\n(x + 9)(x + 10)
825419
x^3 - 6x^2 - 3x + 18 \n= x^2 (x -6) - 3(x-6) \n= (x^2 - 3)(x - 6)
51473
x+3  This is the right answer, because there is no =s sign in the problem.\n\n3x+9-2x-6\nx+3
642123
3a+6a-2+4\n9a-2+4\n9a= 2-4 \n9a= -2\n9a/9= -2/9\na= -2/9
779257
put x=6ab/(a+b)in the eq(x+3a)/(x-3a) + (x+3b)/(x-3b).\nthen you get(9ab+3a^2/3ab-3a^2)+(9ab+3b^2/3ab-3b^2)\nby bringing the common values out in numerator and denominator and cancelling the them we get\n(3b+a/b-a ) +(3a+b/a-b)\nso the answer is 2
172667
You use FOIL (First, Outside, Inside, Last).\n\nF - 2x*3x=6x^2\nO - 2x*-4=-8x\nI - 5*3x=15x\nL - 5*-4=-20\n\nExpanded. 6x^2-8x+15x-20\nSimplify by joining like items - (-8x+15x=7x)\n\nFinal answer. 6x^2+7x-20
144536
6x^4 - 13x^3 - 9x^2 + 28x - 12
791777
5x + 6 = 2x - 9 --- Subtract 2x from each side...\n5x + 6 - 2x = 2x - 9 - 2x\n3x + 6 = -9 --- Subtract 6 from each side...\n3x + 6 - 6 = -9 - 6\n3x = -15 --- Divide both sides by 3...\n(3x) / 3 = (-15) / 3\nx = -5\n\nAnswer: The number is -5.\n\nCheck:\n5x + 6 = 2x - 9 --- Replace x with (-5)...\n5(-5) + 6 = 2(-5) - 9\n(-25 ) + 6 = (-10) - 9\n-19 = -19 --- Answer checks out!
965349
I believe you meant (2x^2 - 3x - 2 )/ (10 + x - 3x^2) right?\n\nWell we can rearrange the problem to look like (2x^2 - 3x - 2 )/ (- 3x^2+ x +10)\n\nWe now factor out the top and factor out the bottom.\n[(2x +1) (x-2)] / [(-3x-5)(x-2)]\n\nSince this is a fraction, we can cancel out the (x-2) because it is on top and the bottom.\n\nWe are left with:\n(2x +1) / (-3x-5)\n\nI think this is what you wanted, good luck and be careful of how you write your notation!
16175
=9x^2+6x+1\n\nsince (a+b)^2=a^2+2ab+b^2\n\nhttp://www.algebrahelp.com/lessons/