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January 28, 2015

January 28, 2015

Posted by **T** on Saturday, May 21, 2011 at 12:00pm.

- algebra -
**MathGuru**, Sunday, May 22, 2011 at 8:25amI assume your problem is this:

2x^2 + 3xy - 4y^2

Note: you can use ^ to mean raised to the power of some value; for example x^2 means x raised to the power of 2 (or x squared).

Substitute 2 for x and -4 for y to evaluate the expression.

I hope this will help get you started.

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