Question

Factorize: (10.2)^3 Class 9 Maths. chapter polynomials.

Answer 1

10.2³=(10+0.2)³

=10³+0.2³+10*0.2(10+0.2)

=1000+0.008+10²+10*0.2+10*0.2+0.2²

=1000+0.008+100+2+2+0.04

=1104.048

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Answer 2

Answer:

${10.2}^{3}$

$= {(10 + 0.2)}^{3}$

$= {10}^{3} + 3 \times {10}^{2} \times 0.2 + 3 \times 10 \times (0.2) { }^{2} + (0.2) {}^{3}$

$= 1000 + 1500 + 1.2 + 0.008$

$= 2501.208$