Question

  

Answer 1

`a, x (3x-2)`

`=3x^2-2x`

`b,5x^2(-x+3x^2-3)`

`= -5x^3 + 15x^4 -15x^2`

`c, -7x(5x^2-3x+2)`

`= -35x^3 +21x^2 -14x`

Answer 2

\(a,x\left(3x-2\right)=3x.x-2.x=3x^2-2x\)

\(b,5x^2\left(-x+3x^2-3\right)=5x^2.\left(-x\right)+5x^2.3x^2+5x^2.\left(-3\right)=-5x^3+15x^4-15x^2=15x^4-5x^3-15x^2\)\(c,-7x\left(5x^2-3x+2\right)=-7x.5x^2-7x.\left(-3x\right)-7x.2=-35x^3+21x^2-14x\)