Question

9th class maths
Ch-2: Polynomials & Factorisation
kill 2 - Addition and Subtraction of Polyng
implify each expression :
) (7n power 3- n power4+3n) - (8n + n power 4- 5 npower 3)

$please \: help \: me \: please$
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Answer 1

(7n³- n⁴ +3n)- (8n+n⁴ -5n³)

= 7n³- n⁴ +3n -8n-n⁴+5n³

=12n³-2n⁴-5n

Answer 2

Answer:

(7n³- n⁴ +3n)- (8n+n⁴ -5n³)

= 7n³- n⁴ +3n -8n-n⁴+5n³

=12n³-2n⁴-5n