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Subtract 5x2 + 2x – 11 from 3x2 + 8x – 7. Express the result as a trinomial.
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Subtract 5x2 + 2x – 11 from 3x2 + 8x – 7. Express the result as a trinomial.

User Greenimpala
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2 Answers

5 votes
(3x^2 + 8x - 7) - (5x^2 + 2x - 11)
= 3x^2 + 8x - 7 - 5x^2 - 2x + 11
= (3x^2 - 5x^2) + (8x - 2x) + (11-7)
= -2x^2 + 6x + 4
User Mmell
by
8.2k points
6 votes
(3x² + 8x - 7) - (5x² + 2x - 11) = -2x² + 6x + 4

-2x² + 6x + 4 is your answer

hope this helps

Note: 2 negatives = 1 positive
-7 - (- 11) = -7 + 11 = 4


User Dave Newman
by
8.0k points
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