Math, asked by jhashivani835, 7 days ago

find the value of 8x3-27y3-18xy(2x-3y), when x=8 and y=5

Answers

Answered by uttambera538

1

x = 8

y = 5

8x³ - 27y³ - 18xy (2x-3y)

= 8 × 8³ - 27 × 5³ - 18 × 8 × 5 × (2 × 8 - 3 × 5)

= 8 × 512 - 27 × 125 - 18 × 8 × 5 × (2 × 8 - 3 × 5)

= 8 × 512 - 27 × 125 - 18 × 8 × 5 × (16 - 15)

= 4096 - 3375 - 720 × 1

= 4096 - 3375 - 720

= 1

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