Question 592189
1. (-7 square 3)(-4 square 10)
= (-7*9)*(-4*100) = -63*-400
= 25200
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2. square 16/36
= 256/36
= 64/9
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3. y/square 7+square 3
What's the denominator?  1 term or both?
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#1 is not clear.  Is it -(7)^2 ? or (-7)^2 ?  Or 7 times 3^2 ?