MCQ
Tick $(\checkmark)$ the correct answer: $(82)^2 - (18)^2 = ?$
- A$8218$
- B$6418$
- ✓$6400$
- D$7204$
✓
Answer
Correct option: C.
$6400$
C. $6400$
Solution:
$(82)^2- (18)^2$
$= (82 + 18)(82 - 18)$
$= 100 \times 64$
$= 6400$
Solution:
$(82)^2- (18)^2$
$= (82 + 18)(82 - 18)$
$= 100 \times 64$
$= 6400$
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