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OpenStudy (anonymous):
find the sum -9y^2 + y^2 + 19y^2
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OpenStudy (welshfella):
-9 + 1 + 19 = ? then place y^2 after the result
OpenStudy (anonymous):
11y^2 ?
OpenStudy (anonymous):
that was right thank you . will you help me with a few others ?
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