f(x)=x+5
f(-1)=-1+5=4
f(2)=2+5=7
f(x)=x^3+x
f(-1)=(-1)^3+(-1)=-1-1=-2
f(2)=2^3+2=8+2=10
.f(x)=(x+1)(x-2)
f(-1)=(-1+1)(-1-2)=0*(-3)=0
f(2)=(2+1)(2-2)=3*0=0
a)
f(-1)= -1+5 =4
f(2)= 2+5=7
b)
f(-1)=(-1)^3+(-1)= -1-1=-2
f(2)=2^3 + 2 =8+2=10
c)
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f(x)=x+5
f(-1)=-1+5=4
f(2)=2+5=7
f(x)=x^3+x
f(-1)=(-1)^3+(-1)=-1-1=-2
f(2)=2^3+2=8+2=10
.f(x)=(x+1)(x-2)
f(-1)=(-1+1)(-1-2)=0*(-3)=0
f(2)=(2+1)(2-2)=3*0=0
a)
f(-1)= -1+5 =4
f(2)= 2+5=7
b)
f(-1)=(-1)^3+(-1)= -1-1=-2
f(2)=2^3 + 2 =8+2=10
c)
f(-1)=(-1+1)(-1-2)=0*(-3)=0
f(2)=(2+1)(2-2)=3*0=0