Question

4x⁴+4x⁴+x

X²-6x-y²+9

Answer 1

a: =5x^4+x=x(5x^3+1)

b: =(x-3)^2-y^2

=(x-3-y)(x-3+y)

Answer 2

\(4x^4+4x^4+x\)

\(=8x^4+x\)

\(=x\left(8x^3+1\right)\)

\(=x\left[\left(2x\right)^3+1^3\right]\)

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

------------------------------------

\(x^2-6x-y^2+9\)

\(=\left(x^2-6x+9\right)-y^2\)

\(=\left(x-3\right)^2-y^2\)

\(=\left(x-y-3\right)\left(x+y-3\right)\)