x + 12x + 20 = (x + 10)(x + 2)
(2x - 3)(2x - 3)
I would do this. Multiply through by -1 -1 ( -X^2 +12X +28 ) = X^2 -12X -28 (X+2)(X-14)
-9x 2 -12x+5 =
12x+6y=9 - 1 4x+2y=0 - 2 y=-2x sub y= -2x into 1, 12x+6(-2x)=9 12x-12x=9 0=9 thus, no solution.
x2 + 12x + 32 = (x + 4)(x + 8)
4x(4x^2 + 3x + 1)
(x + 8)(x + 4)
6.(x2 + 12x + 36) = 6.(x + 6)(x + 6)
(x + 8)(x + 4)
x + 12x + 20 = (x + 10)(x + 2)
The GCF is 3x.
Factor 2x plus 12x plus 28 is (x - 3)(x - 9)
2(x + 4)(x - 10)
3x3+12x = 3x(x2+4)
That doesn't factor neatly. Applying the quadratic formula, we find two real solutions:-6 plus or minus 2 times the square root of 2 x = -3.1715728752538097 x = -8.82842712474619
30+12x = 6(5+2x)