Question

if -1 is a zero of the polynomial f( x) = x²-7x-8x then calculate the other zero​

Answer 1

Answer:

suppose,

$\alpha \: and \: \beta \: are \: the \: zeros \: \\ and \: given \: one \: zero \: is \: \beta = - 1 \\ \\ \alpha = to \: find \: \\ so \: \\ \alpha + \beta = 7 \\ \alpha - 1 = 7 \\ \alpha = 8$