Answer:
4x² - 30x + 62
Explanation:
(13x² - 10x + 12) - (9x² + 20x - 50)
first get rid of the parantheses by distributing the -
13x² - 10x + 12 - 9x² - 20x + 50
then combine like terms
(13x^2 - 10x + 12) - (9x^2 + 20x - 50)
13x^2 - 10x + 12 - 9x^2 - 20x + 50
13x^2 - 9x^2 = 4x^2
- 10x - 20x = -30x
12 + 50 = 62
4x^2 - 30x + 62
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