QUESTION

CSAT

Medium

Maths

Prelims 2018

If X is between –3 and –1, and Y is between –1 and 1, then X2–Y2X^2 – Y^2 is in between which of the following?

Select an option to attempt

Explanation

If X is between -3 and -1, then X² is between 1 and 9.

If Y is between -1 and 1, then Y² is between 0 and 1.

Therefore, X² - Y² is between 0 and 9.

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