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January 27, 2015

January 27, 2015

Posted by **jen** on Sunday, September 5, 2010 at 7:35am.

25w^2-144

- Math -
**drwls**, Sunday, September 5, 2010 at 8:26amThat is the difference of two squares. Remember that a^2 - b^2 = (a+b)(a-b)

Think of "a" as 5w and "b" as 12.

Now write down the answer.

- Math -
**jen**, Sunday, September 5, 2010 at 8:31am25+12=37

25-12=13

37*13=481

so the answer is 481??

- Math -
**drwls**, Sunday, September 5, 2010 at 8:36amNo. Where did the w go?

They are asking for the expression

25w^2 - 144

to be factored, not evalauated.

The answer is

(5w + 12)(5w - 12)

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