Question

if 3a-2b =10 and ab=2 , then find the value of 27a³+8b³
please give me correct answer​

Answer 1

Answer:

hey user..

Step-by-step explanation:

given,

3a -2b=10 and ab=2

we know that..

(a-b)³ =a³+b³-3ab(a-b)

so,

(3a-2b)³=(3a)³+(2b)³- 3. 3a.2b (3a-2b)

(10)³=27a³+ 8b³ - 18ab(10)

1000=27a³+8b³-18.2(10)

1000=27a³+8b³-36(10)

1000=27a³+8b³-360

1000+360=27a³+8b³

1360= 27a³+8b³

hope it helps you..

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