Question

For y = 4x + 2x^2 – x^3
show how to find the value for y, when x = 2. I just need help working it out

Answer 1

when x=2
so you have to replace all x's by 2 and then just solve

Answer 2

substitute 2 into x

Answer 3

solve y=4(2)+2(2)^3-(2)^3

remember to use pemdas

Answer 4

OH, gosh. I totally forgot, thank you both

Answer 5

y=16?

Answer 6

nope

Answer 7

look at ur original question and try that again

Answer 8

that is 2(2)^2 then -(2)^3

Answer 9

8?

Answer 10

correct :)

Answer 11

Yay! Thanks!

Answer 12

yayyayay!!good job!!
mmy pleasure :)