Remove brackets and simplify if possible , by collecting like terms : (1). n[15-n (2n + 5) (n − 3) + n{-15 - 7n (n – 4)} +18]
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Answered by
48
Solution:-
☯︎n[15-n (2n + 5) (n − 3) + n{-15 - 7n (n – 4)} +18]
➪n[15-n{2n²-6n+5n-15} + n{-15-7n²+28n } +18]
➪n[15-n{2n²-n-15} + -15n-7n³+28n² +18]
➪n[15-2n³-n²-15n+ -15n-7n³+28n² +18]
➪15n-2n⁴-n³-15n² -15n²-7n⁴+28n³+18
➪-2n⁴-7n⁴-n³+28n³-15n²-15n²+15n+18
➪ -9n⁴+27n³-30n²+15n+18
Answered by
1
Solution:-
☯︎n[15-n (2n + 5) (n − 3) + n{-15 - 7n (n – 4)} +18]
➪n[15-n{2n²-6n+5n-15} + n{-15-7n²+28n } +18]
➪n[15-n{2n²-n-15} + -15n-7n³+28n² +18]
➪n[15-2n³-n²-15n+ -15n-7n³+28n² +18]
➪15n-2n⁴-n³-15n² -15n²-7n⁴+28n³+18
➪-2n⁴-7n⁴-n³+28n³-15n²-15n²+15n+18
➪ -9n⁴+27n³-30n²+15n+18
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