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OpenStudy (anonymous):
4x2 + ___x + 49
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OpenStudy (anonymous):
28
myininaya (myininaya):
so i suppose you want us to put a number there that completes the square right?
myininaya (myininaya):
\[(2x+7)^2=(2x+7)(2x+7)=4x^2+14x+14x+49=4x^2+28x+49\]
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