Question

Use suitable identity and find the value of
1.5²-0.5²​

Answer 1

Hope this will help you.

Answer 2

SOLUTION

TO DETERMINE

The value using suitable identity

$\sf{ {(1.5)}^{2} - {(0.5)}^{2} }$

FORMULA TO BE IMPLEMENTED

We are aware of the identity that

$\sf{ {a}^{2} - {b}^{2} = (a + b)(a - b)}$

EVALUATION

$\sf{ {(1.5)}^{2} - {(0.5)}^{2} }$

$\sf{ = (1.5 + 0.5) \times (1.5 - 0.5)}$

$\sf{ = 2 \times 1}$

$\sf{ = 2}$

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