Using the formula (a + b)^2= (a^2+ 2ab + b^2), evaluate: (310)^2 - Vidyadip

Question

Using the formula $(a + b)^2= (a^2+ 2ab + b^2),$ evaluate:
$(310)^2$

✓

Answer

$ (310)^2=(300+10)^2 $
$ =(300)^2+2 \times 300 \times 10+(10)^2 $
$ =(90000+6000+100) $
$ =96100 $

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