Question

can someone help me with this?I never understood this concept of math.


Take -4 + 3a2 from 7a - a2

Answer 1

I will have to ask mt teacher because I don't trust my self with a caluator

Answer 2

Take -4 + 3a2 from 7a - a2

this means we subtrac

7a - a^2 - (-4 + 3a^2)

distributing the negative sign in front of the parentheses

7a - a^2 + 4 - 3a^2

from there, combine like terms (your a^2 terms are your only like terms, so simply subtract -a^2 - 3a^2)

it doesn't explicitly say to write it in standard form, but it would be a good idea (write the a^2 term first, then the a term, then the constant)