Question 89296
Simplify the following: 
1 3x2 + 4x + 3x2 - 4y
= 6x^2 + 4x-4y
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2. (5x - 2y) - (4x + 8y) 
= x - 10y
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3. 3x3(2x2) 
= 6x^5
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4. (-6a3b4)2
= 36z^6b^8
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Cheers,
Stan H.