8x squared
-2*(-2)2 + 0*(-2) + 9 = -2*4 + 9 = -8 + 9 = 1
x < 2 or x > 8.
Let square = [x] -4+3*(-2)*[-4]+[3x-2x]=-4-6-2+[x]=-12+[x]The answer is negative 12 plus squared x.
Factor out -2: -2(x squared +11x-20). This is fully factored.
Negative 11
x is negative 1x is negative 2
2
-22 = 4
54.3 squared
-2x2+32 -2(x2-16) -2(x+4)(x-4)
A negative times a negative is always positive. To see why this is, see the link below.