Question

If f(x)=xsquare-5x+1, then the value of f(2)+f(-1) is

Answer 1

f(x)=x^2-5x+1

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

f(2)=4-10+1

f(2)=-6+1

f(2)=-5

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

f(-1)=1+5+1

f(-1)=7

f(2)+f(-1)=-5+7=2

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Answer 2

Step-by-step explanation:

first put x=2 in the equation

we get

f(2)=4-10+1=-5

now put x=-1 in the equation

we get

f(-1)=1+5+1=-3

required value=6-5=1

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