Question

[simp luck voltia]

cho hai đa thức M(x)=-5x³+3x⁴+7-9x

N(x)=-2x⁴+3x-5x³-7

tính M(x)=N(x)

Answer 1

[TV Cuber]

\(M\left(x\right)+N\left(x\right)=-5x^3+3x^4+7-9x-2x^4+3x-5x^3-7\)

\(M\left(x\right)+N\left(x\right)=x^4-10x^3-12x\)

Answer 2

[Chuu]

phép + hay - vậy bạn ?