Question

Solve......!!!!!!


Simplify: 5n(2n3+n2+8)+n(4-n).

Simplify: 4y(y2-8y+6)-3(2y3-5y2+2)

Answer 1

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5n(2n3+n2+8)+n(4-n).

= 5n × 2n3 + 5n × n2 + 5n × 8 + n × 4 - n × n.

= 10n4 + 5n3 + 40n + 4n – n2.

= 10n4 + 5n3 + 44n – n2.

= 10n4 + 5n3 – n2 + 44n.

Answer - 10n4 + 5n3 – n2 + 44n
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Second Question

4y(y2-8y+6)-3(2y3-5y2+2).

= 4y3 - 32y2 + 24y – 6y3 + 15y2 – 6.

= 4y3 – 6y3 - 32y2 + 15y2 + 24y – 6.

= -2y3 – 17y2 + 24y – 6.

Answer - 2y3 – 17y2 + 24y – 6


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Answer 2

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