Tick ( ) the correct answer: (82)^2-(18)^2= ? - Vidyadip

MCQ

Tick $(\checkmark)$ the correct answer:
$(82)^2-(18)^2=$ ?

A
$8218$
B
$6418$
✓
$6400$
D
$7204$

✓

Answer

Correct option: C.

$6400$

$(82)^2-(18)^2$
$=(82+18)(82-18)$
$=100 \times 64$
$=6400$

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