Question

Which expression is equivalent to (-7m* + 15m2 – 12m?) + (3m® – 12m* -zma),

m-6
O 3m*+mo+2m2
O 3m5 - 19m+ +8m3 - 12m2
3m4-ma+2m2
3m4 - 19m2 +8m2 - 12m

Answer 1

c

Explanation:

Answer 2

`3m^4-m^3+2m^2`

Explanation:

Given the expression:

`((-7m^4 + 15m^3-12m^2)+(3m^5-12m^4-7m^3))/(m-6) \\\\Firstly\ simplify\ the\ bracket\ should\ be\ :\\\\=(-7m^4 + 15m^3-12m^2+3m^5-12m^4-7m^3)/(m-6)\\\\collect\ like\ terms\ together:\\\\=(3m^5-7m^4-12m^4 + 15m^3-7m^3-12m^2)/(m-6)\\\\=(3m^5-19m^4 + 8m^3-12m^2)/(m-6)\\\\=(m^2(3m^3-19m^2+8m-12))/(m-6)\\\\=(m^2(m-6)(3m^2-m+2))/(m-6) \\\\=m^2(3m^2-m+2)\\\\=3m^4-m^3+2m^2`