4
what is -12X squared +28X - 15? i figured it out myself. its (-6X + 5)(2X - 3).
x=1
(2x+3)(x+3)
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)
63828
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
It is a quadratic equation.
X=7
2x2 + 7x - 15 = (2x - 3)(x + 5)
Yes.
It equals 53X- a number is squared when it is multiplied by itself, so 7X by 7X = 49X. 2X by 2X =4X, so 49X + 4X is 53X.
(2x-4)(x-1) = 0
17
(2x + 1)(2x + 1) or (2x + 1)2 so x = -0.5
(x + 5)(x - 3)
3x(2x + 1)