Simplify the value of 0 .9 × 0 .9 × 0 .9 + 0 .2 × 0 .2 × 0 .2 + 0 .3…

Question

Simplify the value of 0 .9 × 0 .9 × 0 .9 + 0 .2 × 0 .2 × 0 .2 + 0 .3 × 0 .3 × 0 .3 - 3 × 0.9 × 0 .2 × 0 .3 0 .9 × 0 .9 + 0 .2 × 0 .2 + 0 .3 × 0 .3 - 0.9 × 0 .2 - 0 .2 × 0 .3 - 0.3 × 0.9 = ?

Accepted Answer

Option A. 1.4. Answer & Solution Answer: Option A Solution: According to question, 0 .9 × 0 .9 × 0 .9 + 0 .2 × 0 .2 × 0 .2 + 0 .3 × 0 .3 × 0 .3 - 3 × 0.9 × 0 .2 × 0 .3 0 .9 × 0 .9 + 0 .2 × 0 .2 + 0 .3 × 0 .3 - 0.9 × 0 .2 - 0 .2 × 0 .3 - 0.3 × 0.9 As we know that a^3 + b^3 + c^3 - 3abc = ( a +…