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August 4th, 2013, 07:49 AM   #1
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How to factor this polynomial

How do you factor this: 8(3a-7)^2+2(3a-7)-45 ?

I tried Mathway and the answer was this: 3(2a-3)(12a-37)

But I have no idea how it came up with that. Help me please. Thank you.
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August 4th, 2013, 08:00 AM   #2
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Re: How to factor this polynomial


substitue to get
solve for t:

fill in
gelatine1 is offline  
August 4th, 2013, 12:02 PM   #3
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Re: How to factor this polynomial

hi , Gelatine..
If the situation were something like... 8(3a-7)^2 + 2(3a-7),
then, can I calculate this like .. 8+2 , (3a-7) + ( 3a-7) ? so it will be 10{(3a-7)+(3a-7)} ?
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August 4th, 2013, 12:12 PM   #4
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Re: How to factor this polynomial

No, since you have square of (3a-7)
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