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Question
(17)2 – (13)2 is equal to ______.
Options
80
90
100
120
MCQ
Fill in the Blanks
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Solution
(17)2 – (13)2 is equal to 120.
Explanation:
We can use the difference of squares formula:
a2 – b2 = (a – b)(a + b)
Here, a = 17 and b = 13
So, (17)2 – (13)2
= (17 – 13)(17 + 13)
= (4)(30)
= 120
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