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algebraaaa!
15/f.
sophomore in highschool.
we're reviewing polynomials.
can someone HELP me, not TELL me the answer?
simplify is what i have to do, im stuck on these two:
1.) 2absquared - 3asquaredb
sorry, the squared is crammed in, i can't do the 2 thing above it on here.
2.)5asquaredb - 5absquared.
THANKS IN ADVANCE.
:)
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Sorry, but I sort of had to tell you the answer in order to explain it fully...
When you're factoring, try to find something common in both polynomials. For instance, in your first example, you will find a and b, so you can take a factor of (ab) out. This will leave you with (ab)(2a-3b). You can easily reverse this and check your factoring by multiplying it back out, like this:
(ab)(2a-3b)
= (2a)(ab)-(3b)(ab)
=2a^2b - 3ab^2
(the ^2 is the most commonly used keyboard notation for something squared.)
In the second case, your constant in front is common as well as a and b, so you can take a factor of (5ab) out. This gives you (5ab)(a-b).
Check it:
(5ab)(a-b)
= (5ab)(a)-(5ab)(b)
= 5a^2b - 5ab^2
If you need any more help with math questions, I'm a second year engineering student, so I'm pretty well equipped :)
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theres a math site that gives you step by step instructions on how to find an answer.
i think its www.purplemath.com
also somebody once told me that sparknotes helps with math too.
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neither of those simplifies particularly well. the best you can do is factor an "ab" out of each term.
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