SOLUTION: Hi! I am stuck haven't done algebra in 35 years. I am evaluating an equation. 2x-4y to the 2nd power. x=3 and y= -2. I just forget how to start. Thanks very much

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Question 1055846: Hi! I am stuck haven't done algebra in 35 years. I am evaluating an equation.
2x-4y to the 2nd power. x=3 and y= -2. I just forget how to start. Thanks very much
Found 2 solutions by stanbon, MathTherapy:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
I am evaluating an equation.
2x-4y to the 2nd power. x=3 and y= -2.
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2x - 4y^2
-----
Substitute for x and y::
2*3 - 4*(-2)^2
-------
6 - 4*4
-----
= -10
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Cheers,
Stan H.
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Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!

Hi! I am stuck haven't done algebra in 35 years. I am evaluating an equation.
2x-4y to the 2nd power. x=3 and y= -2. I just forget how to start. Thanks very much
First, and for your information, this is NOT an equation, but an expression, as it DOESN'T contain an equals sign. 

Second, is it:  

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