Math, asked by Anonymous, 1 year ago

expand in detail :- (4-d)^3 +(4)^3+(4+d)^3=?

Answers

Answered by siddhartharao77
1

Important formulas:

(a + b)^3 = a^3 + b^3 + 3a^2b + 3ab^2

(a - b)^3 = a^3 - b^3 - 3a^2b + 3ab^2


Now,

Given Equation is (4 - d)^3 + (4)^3 + (4 + d)^3

⇒ (4)^3 - (d)^3 - 3(4)^2(d) + 3(4)(d)^2 + (4)^3 + (4)^3 + (d)^3 + 3(4)^2(d) + 3(4)(d)^2

⇒ 64 - d^3 - 48d + 12d^2 + (4)^3 + 64 + d^3 + 48d + 12d^2

⇒ 64 + 64 + 64 + 12d^2 + 12d^2

24d^2 + 192.


Hope this helps!


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Answered by PreciouStone
2


Step-by-step explanation:



Given Equation is (4 - d)^3 + (4)^3 + (4 + d)^3


⇒ (4)^3 - (d)^3 - 3(4)^2(d) + 3(4)(d)^2 + (4)^3 + (4)^3 + (d)^3 + 3(4)^2(d) + 3(4)(d)^2


⇒ 64 - d^3 - 48d + 12d^2 + (4)^3 + 64 + d^3 + 48d + 12d^2


⇒ 64 + 64 + 64 + 12d^2 + 12d^2


⇒ 24d^2 + 192.



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