The given expression can be simplified to: 8x squared +9
(x - 6)(x + 9)
57
5x^2 + 6x + 9 + (?) = -x^2 +3x + 3 (?) = -5x^2 -6x - 9 -x^2 +3x + 3 = -6x^2 -3x -6 Ans: -6x squared +3x -6
-51
The given expression can be simplified to: 8x squared +9
-27
4x+6-7x+9=18-3x+15=18-3x=3x=-1
9x2 - 6xy + y2 - 81 = (3x - y)2 - 81 = (3x - y - 9)*(3x - y + 9)
9x2 - 6xy + y2 - 81 = (3x - y)2 - 92 = (3x - y - 9)(3x - y + 9)
27-9 =18. 18/3 =6
(8x + 9)(3x^2 - 1)
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)
(x - 6)(x + 9)
57
5x^2 + 6x + 9 + (?) = -x^2 +3x + 3 (?) = -5x^2 -6x - 9 -x^2 +3x + 3 = -6x^2 -3x -6 Ans: -6x squared +3x -6
7(3y-2)-(-4y+9)