-x2 + 6x + 16 = -(x2 - 6x - 16) = -(x - 8)(x + 2) = -(8 - x)(x + 2)
x^2 + 10x + 16 = (x + 8)(x + 2)
(x + 8)(x + 2)
16
-5x+3(x+8)=16-2x
3x+6 = x-10 3x-x = -10-6 2x = -16 x = -8
-x2 + 6x + 16 = -(x2 - 6x - 16) = -(x - 8)(x + 2) = -(8 - x)(x + 2)
16 + 2x = 10 + 8x 2x - 8x = 10 - 16 -6x = -6 x = 1 Check: 16 + 2(1) = 10 + 8(1) 18 = 18
If x+8=8, then x=0. No its 16
x^2 + 10x + 16 = (x + 8)(x + 2)
-2
-((x + 2)(x - 8))
(x + 8)(x + 2)
16
4(x- 8) + 10 = -10
x + y = 10 y = x + 8 so, x + (x + 8) = 10 2x + 8 = 10 2x + 8 - 8 = 10 - 8 2x = 2 x = 1 and y = 9 because y = x + 8 y = 1 + 8 y = 9
-5x+3(x+8)=16-2x