Find:-
Multiply 1.2 × 1.2
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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
[tex] \sf{ = {(1.2)}^{2} }[/tex]
[tex] \sf{ = {(1 + 0.2)}^{2} }[/tex]
[tex] \sf{ = {(1 )}^{2} + 2 \times 1 \times 0.2 \times {(0.2)}^{2} }[/tex]
[tex] \sf{ = 1 + 0.4 + 0.04}[/tex]
[tex] \sf{ = 1.44}[/tex]
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