Question
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100
Question Palette
(11.98 × 11.98 + 11.98 × X + 0.02 × 0.02) — what is the value of X for which it will be a perfect square?
Correct Option:
A
Explanation
For a perfect square use
(a+b)^2=a^2+2ab+b^2.
Here a=11.98, b=0.02. The middle term must be 11.98×0.04, so X = 0.04.
