Question

 giup mik bai 2 va 3 nhe

Answer 1

Bài 3: 

a: \(M\left(x\right)=-2x^4-3x^2-7x-2\)

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

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

b: Q(x)+M(x)=N(x)

=>Q(x)=N(x)-M(x)

\(=2x^4+3x^2+4x-5+2x^4+3x^2+7x+2=4x^4+6x^2+11x-3\)