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OpenStudy (anonymous):
Is the following problem simplified correctly? (4x+5)(10x+1)=40x^2+4x+15x+5 or 40x^2+19x+20
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OpenStudy (anonymous):
no
OpenStudy (anonymous):
\[(4x+5)(10x+1)=4x\times 5x+1\times 4x+5\times 10x +5\times 1\]
OpenStudy (anonymous):
you get \[20x^2+4x+50x+5\] \[20x^2+54x+5\]
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