Aaron0620
Simplify the expression: (5x2 + 3x + 4) − (2x2 − 6x + 3). If the final answer is written in the form Ax2 + Bx + C, what is the value of B?



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shashi20008
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B = 9.
subtract the corresponding powers in both polynomials...

lgbasallote
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distribute the minus:
\[5x^2 + 3x + 4  2x^2 (6x)  3\]
\[5x^2 + 3x _ 4  2x^2 + 6x + 3\]

lgbasallote
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that's supposed to be minus 3

lgbasallote
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ugh \(5x^2+ 3x + 4  2x^2 + 6x 3\) is the last line

Aaron0620
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so its 9?

lgbasallote
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i would say yes

lgbasallote
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@jazy i think you forgot to distribute the minus sign

Aaron0620
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thank you guys