Question

Dada a função quadrática F(x)=x² + 3 x - 4 A) F( 1 ) B) F( 0 ) C) F ( -2 ) POR FAVOR E PRA HOJE

Answer 1

F(x) = x² + 3 x - 4

A) f(1)
x = 1

f(x) = x² + 3x - 4
f(1) = 1² + 3.1 - 4
f(1) = 1 + 3 - 4
f(1) = 0

R.: f( 1) = 0

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B) F( 0 )
x = 0

f(0) = 0² + 3.0 - 4
f(0) = 0 + 0 - 4
f(0) = - 4

R.: f(0) = - 4

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C) f(- 2) 

x = - 2

f(x) = x² + 3x - 4
f(-2) = (-2)² + 3.(-2) - 4
f(-2) = 4 - 6 - 4
f(-2) = 0 - 6
f(-2) = - 6

R.: f(-2) = - 6
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