Question

Answer 1

a: \(P\left(x\right)=-x^4+2x^3-2x^2+1\)

\(Q\left(x\right)=x^4+x^3-x^2+3x+1\)

b: \(M\left(x\right)=P\left(x\right)+Q\left(x\right)=3x^3-3x^2+3x+2\)

Bậc la 3

Answer 2

\(a.\)

\(P\left(x\right)=-x^4+2x^3-2x^2+1\)

\(Q\left(x\right)=x^4+x^3-x^2+3x+1\)

\(b.\)

\(M\left(x\right)=P\left(x\right)+Q\left(x\right)\)

\(=\left(x^4+2x^3-2x^2+1\right)+\left(x^4+x^3-x^2+3x+1\right)\)

\(=3x^3-3x^2+3x+2.\)

\(Bậc\): \(3.\)

Answer 3