Question

sendo F(x)=x²+5×-8,calcular: F (1)+f (-2)

Answer 1

f(x)= x^+5x-8

f(1)

f(1)= 1^+5.(1)-8
f(1)= 1+5-8 = -2

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f(-2)= (-2)^+5.(-2)-8
f(-2)= 4-10-8
f(-2)= -14

acho que é assim