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OpenStudy (anonymous):
read the math book it didnt help how do you simplify this? -3x to the second power+4xy+7y to the second power+(-3yto the second power+5xy+11yto the second power)
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hero (hero):
\[-3x^2 + 4xy + 7y^2 + -3y^2 + 5xy + 11y^2\]
hero (hero):
\[-3x^2 +9xy +15y^2\]
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