Math, asked by khushi461533, 3 months ago

Evaluate the following by using identity 2nd. (i) (9.9)2​

Answers

Answered by anzalnanihas
3

 {9.9 }^{2}  = (10 - 0.1) {}^{2}

(a - b) {}^{2}  =  {a}^{2}  - 2ab +  {b}^{2}

10 {}^{2}  - 2 \times 10 \times 0.1 + 0.1 {}^{2}   \\ 100 - 2 + .01 = 98.01

Answered by ankitasharmaof63
0

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