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sewolf1234
10.11.2020 •
Mathematics
Is the part is 75 and the whole is 500 what is the percent
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Ответ:
If the part is 75 and the whole number is 500 the percent would be 15%
Step-by-step explanation:
Ответ:
Using the formula a³ - b³ = (a - b) (a² + ab + b²) , we get,
((x+5) - (2x + 1)) ((x+5)² + (x+5)(2x + 1) + (2x + 1)²)
Using formula of (a + b)² = a² + 2ab + b² , we get,
= (x + 5 - 2x - 1) (x² + 10x + 25 + 2x² + x + 10x + 5 + 4x² + 4x + 1)
= (-x +4) (7x² + 25x + 31)
= -7x³ - 25x² - 31x + 28x² + 100x + 124
= -7x³ + 3x² + 69x + 124 > thats the answer