Question

Evaluate the following 72^2-68^2

Answer 1

${72}^{2} - {68}^{2} \\ = > (72 + 68)(72 - 68) \\ = > 140 \times 4 \\ = > 560 \: \: \: \: ans$

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Answer 2

72^2 – 68^2

( 72 + 68 ) ( 72 – 68 )

140 × 4

560.