Expand the following, using suitable identities. (7x + 5)^2 - Vidyadip

Question

Expand the following, using suitable identities.
$(7x + 5)^2$

✓

Answer

$(7x + 5)^2$
$= (7x)^2+ 5^2+ 2 × 7x × 5$
$= 49x^2+ 25 + 70x$

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