SOLUTION: Factor Completely: 7h^3 - 35h - 42h

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Factor Completely: 7h^3 - 35h - 42h      Log On


   

Question 70158This question is from textbook Prentice Hall Mathematics Algerbra 1
: Factor Completely:
7h^3 - 35h - 42h This question is from textbook Prentice Hall Mathematics Algerbra 1

Found 2 solutions by stanbon, Edwin McCravy:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
7h^3 - 35h^2 - 42h
Factor Completely:
----------
I'm assuming you meant what I have written, not what you posted:
=7h(h^2-5h-6)
=7h(h-6)(h+1)
----------
Cheers,
Stan H.

Answer by Edwin McCravy(20081) About Me  (Show Source):
You can put this solution on YOUR website!
Factor Completely: 
7h³ - 35h² - 42h

First factor out 7h

7h(h² - 5h - 6)

Think of two positive integers whose product is 6 and
whose difference is 5.  They are 6 and 1. Write this:

7h(h   6)(h   1)

Since the -5h is negative, put a negative sign on the
larger, 6, and the opposite sign (positive) on the 1.

7h(h - 6)(h + 1)

Edwin