Question

1)x^2-x^4 2)y^3-y 3)y^3-y^5 4)81x-x^3 5)mx^2-my^2

     

Answer 1

1. x^2(1-x^2)=x^2(1-x)(1+x)

2. y(y^2-1)=y(y-1)(y+1)

3. y^3(1-y^2)=y^3(1-y)(1+y)

4. x(81-x^2)=x(9-x)(9+x)

5. m(x^2-y^2)=m(x-y)(x+y)