Question

Write the polynomial in factored form
4x^3 + 8x^2 - 96x
a) 6x(x+4)(x-4)
b) 4x(x-4)(x+6)
c) 4x(x+6)(x+4)
d) -4x(x+6)(x+4)

What are the zeros of the function?
y= x(x+2)(x+5)
a) 0, 2, 5
b) -2, -5
c) -2, -5, 2
d) 0, -2, -5

Answer 1

the answer for the second question is option d .
you need to see that for what values of x, the polynomial equals to zero
and if you want to answer the first question very easily, then factorisation is the only method and i think that the answer is b option

Answer 2

thanks for the medal