SOLUTION: Andrew factored the expression -30x^3-9x^2-3x as -5x(6x^2-2x-1) . But when Melissa applied the distributive law and multiplied out -5x(6x^2-2x1) , she got -30x^3+10x^2+5x; thus,
Algebra.Com
Question 544913: Andrew factored the expression -30x^3-9x^2-3x as -5x(6x^2-2x-1) . But when Melissa applied the distributive law and multiplied out -5x(6x^2-2x1) , she got -30x^3+10x^2+5x; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this better. Explain your reasoning and correctly factor the original expression, if possible. If the expression is prime, so state.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Andrew factored the expression -30x^3-9x^2-3x as -5x(6x^2-2x-1) . But when Melissa applied the distributive law and multiplied out -5x(6x^2-2x1) , she got -30x^3+10x^2+5x; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this better. Explain your reasoning and correctly factor the original expression, if possible. If the expression is prime, so state.
------------------------------
-30x^3-9x^2-3x as -5x(6x^2-2x-1)
---
Dividing -30x^3-9x^2-3x by -5x you should get:
6x^2+(9/5)x+(3/5)
========================
Cheers,
Stan H.
RELATED QUESTIONS
Andrew factored the expression -30x^3-9x^2-3x as -5x(6x^2-2x-1) . But when Melissa... (answered by richwmiller)
Will someone please help me with this Im lost.Andrew factored the expression... (answered by josmiceli)
Andrew factored the expression -30x^3-9x^2-3x as -5x(6x^2-2x-1). But when Melissa... (answered by edjones)
Word problems are difficult. Could someone please walk me through this problem? Thank... (answered by ewatrrr)
8. Andrew factored the expression -6x^3+9x^2-3x as -3x(2x^2-3x-1) . But when Melissa... (answered by Gogonati)
Andrew factored the expression -6x^3+9x^2-3x as -3x(2x^2-3x-1) but when Melissa applied... (answered by richard1234)
Can someone please help?
Andrew factored the expression 54x^3-30x^2+15x as... (answered by jim_thompson5910)
Andrew factored the expression 28x³-6x²-10x as 2x(14x³-3x²-5x). But when Melissa applied... (answered by richard1234)
Andrew factored the expression 28x^3-42x^2+35x as 7x(4x^4+6x-5). But when Melissa applied (answered by ankor@dixie-net.com)