Question

3) a b c d por favor galera me ajude

Answer 1

a) -x⁴-5x²+5x
eu achou q e assim!

Answer 2

respostas

$a) \\ 3x^4-4x^4+2x^2-7x^2+5x= \\ \\ -x^4-5x^2+5x \\ \\ b) \\ \frac{x^2+3x^2}{3} ~~\frac{-3x^4+10x^4}{2} = \\ \\ \frac{4}{3} x^2+ \frac{7}{2} x^4$ 

$c) \\ 1,2m^3-0,8m^3+10m^3=12,4m^3 \\ \\ d) \\ \\ cd^2-c^2d+cd-3cd= \\ \\ cd^2-c^2d-2cd$