Answer:
the answer is C
Step-by-step explanation:
x2−162x2−9x+42x2+14x+244x+4
=4x3+4x2−64x−644x4+10x3−70x2−160x+96
=2x3+2x2−32x−322x4+5x3−35x2−80x+48
=2(x+1)(x+4)(x−4)(2x−1)(x+3)(x+4)(x−4)
=2x+22x2+5x−3
x=77
y=58
z= 122
you answer is b) -x^2-4x+7
