Question

Answer 1

c: \(=x^2-4x+4+x^2+6x+9-2\left(x^2-1\right)\)

\(=2x^2+2x+13-2x^2+2=2x+15\)

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

\(=x^3+x^2-4x+3-x^3+4x=x^2+3\)

Answer 2

\(c,=x^2-4x+4+x^2+6x+9-2\left(x^2-1\right)=2x^2+2x+13-2x^2+2=2x+15\\ d,=x^2-4x+4+x^3-1-x\left(x^2-4\right)=x^3+x^2-4x+3-x^3+4x=x^2+3\)