Andrew factored the expression
-6x^3+9x^2-3x as, -3x(2x^2-3x-1). But when Melissa applied the distributive law and multiplied out -3x(2x^2-3x-1), she got
-6x^3+9x^2+3x; thus, Andrew's solution does not appear to heck. Why is that? Please help Andrew to understand this better. Explain and correctly factor the original axpression, if possible. If the expression is prime, so state this.

Question

Andrew factored the expression
-6x^3+9x^2-3x as, -3x(2x^2-3x-1).  But when Melissa applied the distributive law and multiplied out -3x(2x^2-3x-1), she got
-6x^3+9x^2+3x; thus, Andrew's solution does not appear to heck. Why is that? Please help Andrew to understand this better. Explain and correctly factor the original axpression, if possible. If the expression is prime, so state this.

stacey · Answer

When you factor out a negative the signs change, so instead of -1 in the parenthesis, it should be +1.

amistre64 · Answer

he goofed on the -1 part..

-3x(1) = -3x....

anonymous · Answer

ok thank you.
so the correct expression should be -3x(2x^2-3x+1).

stacey · Answer

Yes

anonymous · Answer

thank you