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Thalia Copeland
Mathematics
15 December, 16:29
Simplify
4 (5x^2-9x+7) + 2 (-10^2+18x-13)
+3
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2
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Gianni Griffin
15 December, 16:49
0
4 (5x² - 9x + 7) + 2 (-10² + 18x - 13)
Distribute 4 inside the parentheses.
20x² - 36x + 28 + 2 (-10² + 18x - 13)
Find 10 to the power of two.
20x² - 3y6x + 28 + 2 (-100 + 18x - 13)
Combine like terms inside the parentheses (-100 - 13).
20x² - 36x + 28 + 2 (-113 + 18x)
Distribute 2 inside the parentheses.
20x² - 36x + 28 + (-226 + 36x)
Rewrite as - 226 and + 36x; remove the parentheses.
20x² - 36x + 28 - 226 + 36x
Combine like terms. The - 36x and 36x cancel each other out.
20x² - 198
is your answer.
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Danielle Travis
15 December, 16:53
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The answer is 20x^2 - 198
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