2x2 + 11x + 15 = (x + 3)(2x + 5).
Yes
x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0
2x2 + 3x - 20 = (x + 4)(2x - 5).
2x2 + 10 = 9x 2x2 - 9x + 10 = 0 (x - 2)(2x - 5) = 0
2x2 + 11x + 15 = (x + 3)(2x + 5).
2x2=4x4=16
Yes
x = (-1 ± √11) / 2
x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0
2x2 + 3x - 20 = (x + 4)(2x - 5).
2x2 + 10 = 9x 2x2 - 9x + 10 = 0 (x - 2)(2x - 5) = 0
2x2 + 10 - 9x = 0 or 2x2 - 9x + 10 = 0 So (x - 2)*(2x - 5) = 0
2x2 + 2x = 2x(x+1)
(2x + 1)(x + 3) = 0; x = -0.5 or -3
4x4 + 1 = (2x2 - 2x + 1)(2x2 + 2x + 1)
(2x - 1)(x - 1) so x = ½ or 1