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velikii [3]
3 years ago
7

97 points

Mathematics
2 answers:
Dmitry_Shevchenko [17]3 years ago
5 0

(5c+\frac{2}{3} )(5c-\frac{2}{3} )=  25x^{c}+\frac{-4}{9}


HOPE THIS HELPS!

rosijanka [135]3 years ago
4 0

Remember:

The product of the sum of two perfect cubes:

a³ + b³ = (a + b)(a² - ab + b²)

The product of the difference of two perfect cubes:

a³ - b³ = (a - b)(a² + ab + b²)

----------------------------------------------------------------------------------------------------------------

Remember to follow PEMDAS.

(5c)(5c) = 25c²

(5c)(-2/3) = -10c/3

(2/3)(5c) = 10c/3

(2/3)(-2/3) = -4/9

25c²- 10c/3 + 10c/3 - 4/9

Combine like terms

25c² (-10c/3 + 10c/3) - 4/9

25c² - 4/9

25c² - 4/9 is your answer

hope this helps

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