Question

seja a funcao f(x)=3x^2-5x+7 calcule f(-2)-f(3)

Answer 1

f(x)=3x^2-5x+7 calcule f(-2)-f(3)
f(-2) = 3(-2)^2 - 5(-2) + 7

f(-2) = 3.4 + 10 + 7

f(-2) = 12 +17

f(2) = 29

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f(3) = 3(3)^2 - 5(3) + 7

f(3) = 3.9 - 15 + 7

f(3) = 27 - 8

f(3) = 19

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f(-2) - f(3) ==> 29 - 19 ==>  10