Answer:
The answer is nine-halves, the last option.
Step-by-step explanation:
QR = 86
<em>Trust.</em>
x^4 - 2x^3 - 29x^2 - 42x
Equal all the zeros to x then move them over.
x=7,x=-3,x=0,x=-2
x-7,x+3,x+0,x+2
Then multiply each factor
(x-7)(x+3)(x)(x+2)
