Question

Simplify 7x2 + 4.5y – 3y + x2 – 5x

The answer is 8x^2 -5x + 1.5y

Please explain how someone got this answer, thanks.

Answer 1

combine like terms first

Answer 2

4.5 y - 3.5 y = 1.5 y

like this?

Answer 3

7x^2 + x^2 = 8^2

Answer 4

mhm

Answer 5

all terms with x^2 are like terms, all with x are like terms, and all with y are like terms

Answer 6

you already got the x^2's so lets do the x's: theres only one x which is -5 so we keep it like that

Answer 7

now y's :theres 4.5 and -3 so 4.5 - 3 = 1.5. the two y terms combined = 1.5y

Answer 8

I get it now, Thanks!

Answer 9

+1

Answer 10

anytime