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Evaluate the following: f(x) = 2x2-1 if x= -3

User Mseebach
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1 Answer

18 votes
18 votes

we have

f(x)=2x^2-1

For x=-3

substitute the value of x in the function

f(-3)=2(-3^2)-1

f(-3)=2(9)-1

f(-3)=18-1

f(-3)=17

User Sahil Gulati
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