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Lodiccakego
Answered

7. Given the expression: f(x) = 2x^3+ 5x^2 + x - 5
What is f(-2) ?​

Sagot :

Answer:

Step-by-step explanation:

F(x)=2x^3 +5x^2 +x -5

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

f(-2/=2(-8)+5(4)-2-5

f(-2)=-16+20-2-5

f(-2)=4-2-5

f(-2)=2-5

f(-2)=-3

Answer: -3

Step-by-step explanation:

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

      = 2(-2)^3+5(-2)^2+(-2)-5

      =2(-8)+5(4)-2-5

      =-16+20-2-5

      = -3

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