polynomial functions

[left pewter]

Im subbing in the values for X and simplifying it but im not getting anywhere close

Q4
a: The answer is -4 but i got -7
b:The answer is -8 i got -8
c:i got 42 the answer is -14

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[zenith snow]

how did you get your answers? will you elaborate? when you plug in values and simplify youre getting the answers with the correct arithmetic

remember that if $p(x) = kx^n + cx$

then $p(a) = ka^n +ca$

[ebon schooner]

racism (ak arc)

[left pewter]

For C i put -2 in the places of X and multiplied it out

So it would be

[zenith snow]

-16 - 4 +10-4

which is -14

cube of negative stays negatvie

[left pewter]

i did not know that

[left pewter]

This

and for A i did the same and still got it wrong

[half thorn]

new general

[zenith snow]

in a just put 0 for all values except constant

[left pewter]

F(0)=2(0) 0 +5(0) -4

[zenith snow]

i think -7 would be p(1)

[left pewter]

I got -7

[left pewter]

Whats constant

[zenith snow]

thats 0+0+0-4

[zenith snow]

the last value

-4

[left pewter]

oh

man i be overthinking it

Thank you

[zenith snow]

the one with no x

[left pewter]

yes