2 years ago

(-5x^2+2x+6)-(9x^2+2x+9)+(-6x^2+5x-3) simplified

Mathematics

2 answers:

igomit [66]2 years ago

6 0

Answer:

− 20 x ^2 + 5 x − 6

Step-by-step explanation:

jolli1 [7]2 years ago

5 0

Answer:

$-20x^2+5x-6\\$

Step-by-step explanation:

Start by removing the grouping symbols (parentheses) using the sign rules:

$(-5x^2+2x+6)-(9x^2+2x+9)+(-6x^2+5x-3)=\\=-5x^2+2x+6-9x^2-2x-9-6x^2+5x-3$

Then we re-order and combine like terms:

$-5x^2+2x+6-9x^2-2x-9-6x^2+5x-3=\\=-5x^2-9x^2-6x^2+2x-2x+5x+6-9-3=\\=-20x^2+5x-6$

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