Question

Use (a+b)^2 = a^2 + 2ab + b^2 to evaluate (10.2)​

Answer 1

Step-by-step explanation:

L.H.L

(a+b)^2

(a+b)×(a+b)

a(a+b)+b(a+b)

a²+ab+ba+b²

a²+2ab+b²

hence proved.....

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Answer 2

10.2 = (10+0.2)^2
10^2+(0.2)^2+2.(10).(0.2)
100 + 0.04 + 4
104.04 is the answer