Question

Write all the steps

if a-2n = 4 ,ab = 6 find a^3 - 8b^3

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

a³-(2b)³=(a-2b)(a²+b²+ab)

now a-2b is given as 4

ab is 6

(a-2b)²=4²

a²+b²-2ab=16

a²+b²-6×2=16

a²+b²=16+12

a²+b²=28

now put all values

4(28+6)

4×34

136 is the answer