Question

show that 1 is a zero of the polynomial x2+x-2
answer fast plzzz

Answer 1

Step-by-step explanation:

$x {}^{2} + x - 2 \\ x {}^{2} -2x + x - 2 \\ x(x - 2) + 1(x - 2) \\ x = 2 \: or \: - 1$