please solve..........
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Step-by-step explanation:
- n [15 - n (2 n + 5 ) ( n - 3) + n{-15 - 7 n ( n - 4 )} + 18 ]
= n [15 - n (2 n + 5 ) ( n - 3) + n{-15 - 7 n² + 28 n} + 18 ]
= n [15 - n (2 n² - 6n + 5n - 15) - 15n - 7 n³ + 28 n²+ 18 ]
= n [15 - 2 n³ + 6n²- 5n² + 15n - 15n - 7 n³ + 28 n²+ 18 ]
= n [ 33 - 9 n³ + 29 n²]
= 33n - 9 n⁴+ 29 n³
Thank u.
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