G (x) = - 2 (x+1) (x+7) find the zeros

When finding zeros, the function has to equal zero. In other words, G (x) = 0.

For three multiplied parts to equal to zero, at least one has to be zero. - 2 ≠ 0, but (x+1) or (x+7) can.

So you can equate each of those to zero and find out what the zeros are.

x+1=0

x=-1

x+7=0

x=-7

Thus the answer

x = - 1 or - 7