Question

F(x)= ײ+2×-8

Calcule f(-1)

Answer 1

F(-1) = x² + 2x - 8

f(-1) = (-1)² + 2 • (-1) - 8

f(-1) = 1 - 2 - 8

f(-1) = - 1 - 8

f(-1) = - 9

Answer 2

f(x) = x² + 2x - 8

Calcule f(-1)

f(x) = x² + 2x - 8

f(-1) = (-1)² + 2 · (- 1) - 8

f(-1) = 1 + (- 2) - 8

f(-1) = 1 - 2 - 8

f(-1) = - 1 - 8

f(-1) = - 9 ✅

Espero ter ajudado! :)