Question

(3-5a)^3 please answers this question

Answer 1

(3-5a)^3
3^3-5a^3-3*3^3*5a+3*3*5a^2
9-5a-135a+225a^3

Answer 2

Without using formula, (a -b)³

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$(3 - 5a)^3$

$(3 - 5a)^2$×( 3 - 5a)

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By Formula, (a - b)² = a² + b² -2ab
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[9 + 25a² -30a ] (3 - 5a)

[(3)(9 + 25a² -30a)] - [(5a)(9 + 25a² -30a)]

[27 + 75a² - 90a] - [45a + 125a³ - 150a²]

27 + 75a² -90a - 45a - 125a³ + 150a²

-125a³ + 225a² - 135a  + 27




i hope this will help you



-by ABHAY