3 years ago

Find the sum. 2x x2 - 6x + 9 + x2 + 2x - 15

Mathematics

1 answer:

galina1969 [7]3 years ago

5 0

Answer:

$\large\boxed{x^2-6x+9+x^2+2x-15=2x^2-4x-6}$

Step-by-step explanation:

$x^2-6x+9+x^2+2x-15\qquad\text{combine like terms}\\\\=(x^2+x^2)+(-6x+2x)+(9-15)\\\\=2x^2-4x-6$

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