Question

simplify (2a+b)³ with formula​

Answer 1

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simplify (2a+b)³ with formula

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a-b)3=a3-3a²b+3ab2-b3 (a+b)3=a3+3a2b+3ab2+b3 Now, (a+b)3 - (a-b)3 = {a+3a²b+3ab2+b3} - {a3-3a²b+3ab2-b3}

= 6a+b+ 2b3

equation(1)

Similarly, (2a+b)3 - (2a-b)3 = ?

here a = 2a & b = b

Substitute these values in equation(1)

→ 6 (4a²b) + 2 b3 = 24 a²b + 2 b3

What is (2a+b) cube -(2a-b) cube?

ANSWER: 24 alb + 2 b3

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Answer 2

Answer:

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