Question

How do you simplify `7x^{3}+7x^{4}+9+3x^{4}-5+3x^{3}`?

Answer 1

`color(magenta)(2(5x^4+5x^3+2)`

Explanation:

`7x^3+7x^4+9+3x^4-5+3x^3`

`:.=7x^3+3x^3+7x^4+3x^4+9-5`

`:.=10x^3+10x^4+4`

`:.=10x^4+10x^3+4`

`:.color(magenta)(=2(5x^4+5x^3+2)`