That doesn't factor neatly. Applying the quadratic formula, we find two real solutions: -2 plus or minus the square root of 6.
x = 0.4494897427831779
x = -4.4494897427831779
If that's + 4x2, the answer is 2x(x2 + 2x - 4)
X3 - 4X2 - 45XX(X2 - 4X - 45)=============X is only common factor here.
The GCF is 4x2.
4x2+20x+25 (2x+5)^2
4x
If that's + 4x2, the answer is 2x(x2 + 2x - 4)
4x2 + x2 = 8 + x2
-3
X3 - 4X2 - 45XX(X2 - 4X - 45)=============X is only common factor here.
x3 + 4x2 + x + 4 = (x + 4)(x2 + 1)
4(x2 - 6x + 13)
x3 - 4x2 + 5x - 20 = x2*(x - 4) + 5*(x - 4) = (x2 + 5)*(x - 4)
(x3 + 4x2 - 3x - 12)/(x2 - 3) = x + 4(multiply x2 - 3 by x, and subtract the product from the dividend)1. x(x2 - 3) = x3 - 3x = x3 + 0x2 - 3x2. (x3 + 4x2 - 3x - 12) - (x3 + 0x2 - 3x) = x3 + 4x2 - 3x - 12 - x3 + 3x = 4x2 - 12(multiply x2 - 3 by 4, and subtract the product from 4x2 - 12)1. 4x(x - 3) = 4x2 - 12 = 4x2 - 122. (4x2 - 12) - (4x2 - 12) = 4x2 - 12 - 4x2 + 12 = 0(remainder)
(x + 3)(4x + 5)
x2 - (2x)2 = x2 - 4x2 = -3x2 x2 - 2x2 = -x2
If the missing signs are all pluses, that's 4x2 + 3x + 3
x2-3x+2.25 is the same as 4x2-12x+9 and is (2x-3)(2x-3) when factored