Question

Evaluate, using identities
( 102^3
(ii) 99^3​

Answer 1

Answer:

(i) 1060312 (ii) 970299

Step-by-step explanation:

(i) (100+2)³

={(100)³+(2)³+(3×100²×2)+(3×100×2²)}

={1000000+8+(3×10000×2)+(3×100×4)}

=(1000000+8+60000+304)

=1060312

(ii) (100-1)³

={(100)³-(1)³-(3×100²×1)+(3×100×1²)}

={1000000-1-(3×10000×1)+(300)}

=(1000000-1-30000+300)

=970299

I hope this will help you