The value of 99^2 is: - Vidyadip

MCQ

The value of $99^2$ is:

A
$(90)^2 + 2(90)(9) + (9)^2$
✓
$(90)^2 - 2(90)(9) + (9)^2$
C
$(90)^2 + (9)^2$
D
None of these.

✓

Answer

Correct option: B.

$(90)^2 - 2(90)(9) + (9)^2$

B. $(90)^2 + 2(90) (9) + (9)^2$
Solution:
$= 99^2 = (90 + 9)^2$
$= (90)^2 + 2(90) (9) + (9)^2$

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