Question

if -1 is a zero of the polynomial f(x)=x^2 -7x -8, then calculate the other zero.​

Answer 1

Answer:

other root is 8

Step-by-step explanation:

$since-1\: is\: the\:root\:other\:root\:will\:be\:\alpha\\ fro m\:the\:given\:equation\:the\:sum\:of\:the\: zeros\:be\:( \frac{ - b}{a }then\:\frac{ - b}{a}=\frac{ - ( - 7)}{1} \\ so \:- 1 +\alpha=7 \\ \alpha = 7 + 1 = 8\\ the\:other\:root\:is\:8$