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Add: (3x^2-5x+6)+(-4x^2-8x+9) A. -x^2-13x+15 B. 7x^2-13x+15 C. -x^2-13x+3 D. 7x^2+3x-3

Add: (3x^2-5x+6)+(-4x^2-8x+9) A. -x^2-13x+15 B. 7x^2-13x+15 C. -x^2-13x+3 D. 7x^2+3x-3
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Add: (3x^2-5x+6)+(-4x^2-8x+9)

A. -x^2-13x+15
B. 7x^2-13x+15
C. -x^2-13x+3
D. 7x^2+3x-3

asked
User Brad Tutterow
by
8.8k points

1 Answer

3 votes

Answer:

A. -x^2-13x+15

Explanation:

-4x^2 + 3x^2 = -x^2

-8x + -5x = -13x

6 + 9 = 15

-x^2-13x+15

answered
User Samara
by
8.5k points
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