Simplify
4(5x^2-9x+7)+2(-10^2+18x-13)
2 answers:
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
The answer is 20x^2 - 198
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$38.69
Step-by-step explanation:
To find the regular price, create a proportion.
To solve for the regular price x, cross multiply the numerator and denominator of each fraction.
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3289=85x
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