Question

if (-1) is a zero of the following pollynomial, then find the value of 'a'
​

Answer 1

Answer:

$a( - 1) {}^{3} - ( - 1) {}^{2} + ( - 1) + 4 = 0 \\ - 1a - 1 - 1 + 4 = 0 \\ - 1a + 2 = 0 \\ - 1a = - 2 \\ a = 2$