Question

Q.4 Using suitable identities, evaluate (84)²?​

Answer 1

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${(84)}^{2} = {(80 + 4)}^{2}$

Using

${(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2}$

${(80)}^{2} + 2 \times 80 \times 4 + {(4)}^{2}$

$6400 + 164 + 16$

$65800$

HOPE IT HELPS. MARK AS BRAINLIEST.

Answer 2

Answer:

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