Question

Find:-

Multiply 1.2 × 1.2​

Answer 1

SOLUTION

TO DETERMINE

The value of 1.2 × 1.2

FORMULA TO BE IMPLEMENTED

We are aware of the formula that

( a - b)² = a² – 2ab + b²

EVALUATION

We have to find the value of 1.2 × 1.2

Now

1.2 × 1.2

$\sf{ = {(1.2)}^{2} }$

$\sf{ = {(1 + 0.2)}^{2} }$

$\sf{ = {(1 )}^{2} + 2 \times 1 \times 0.2 \times {(0.2)}^{2} }$

$\sf{ = 1 + 0.4 + 0.04}$

$\sf{ = 1.44}$

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