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Alexxx [7]
3 years ago
14

Adding and subtracting polynomials(-3x² - 9x + 5) - ( -2x²- 4x + 7)​

Mathematics
1 answer:
seraphim [82]3 years ago
6 0

Answer:

(-3x²- 9x+5) - (-2x²-4x +7)

= (-3x²- 9x²+5) (2x²+4x +7)

=-3x²-9x+5+2x²+4x-7

=-3x²+2x²-9x+4x+5-7

=-x²-5x-2

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Answer with explanation:

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Now, writing polynomials in equivalent form

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2. 10 z + 5 z²=5×z×(z+2)=(z+2)×z×5=5 z² + 10 z

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that is my answer

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