The area of a rectangular classroom is x2 - 25. Which of the following binomials could represent the length and the width of the room.

A (x + 5) (x + 5)

B (x - 5) (x - 5)

C (x + 5) (x - 5)

D x(x - 25)

Solution

Correct Answer: Option C

দেওয়া আছে , x2 - 25
= x2 - 52
= (x + 5)(x - 5)
অতএব , আয়তক্ষেত্রটির সম্ভাব্য দৈর্ঘ্য হতে পারে (x+5) এবং প্রস্থ (x-5)


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