Question

If 3x – 2y = 11 and xy = 12, Find the value of 27x3 – 8y3

Answer 1

Heya ✋

Let see your answer !!!!

Given that

3x - 2y = 11 ; xy = 12

$27x ^{3} - 8y ^{3} =$
3x - 2y = 11

On squaring both sides

$(3x - 2y) ^{3} = (11) ^{3} \\ = > (3x) ^{3} - (2y) ^{3} - 2 \times 3x \\ \times 2y = 1331 \\ = > 27x ^{3} - 8y ^{3} - 12xy \\ = 1331 \\ = > 27 x^{3} - 8y^{3} - 12 \times 12 \\ = 1331 \\ = > 27x ^{3} - 8y ^{3} - 144 = 1331 \\ = > 27x ^{3} - 8y ^{3} = 1331 + 144 \\ = > 27y ^{3} - 8y ^{3} = 1475$



Thanks :))))

Answer 2

Answer:

Step-by-step explanation:

see the attachment