MCQ
The Possible expressions for the length and breadth of the rectangle whose area is given by 4a2 + 4a - 3 is:
- A(2a - 1) and (2a + 3)
- B(2a - 1) and (2a - 3)
- C(2a + 1) and (2a + 3)
- DNone of these.
✓
Answer
- (2a - 1) and (2a + 3)
Solution:
4a2 + 4a - 3
To find the length and breadth, we will factorize the given polynomial.
= 4a2 - 6a - 2a - 3
= 2a(a +3) - 1(2a + 3)
= (2a + 3) (2a - 1)
Therefore, the Possible expressions for the length and breadth of the rectangle whose area is given by 4a2 +4a - 3 is (2a + 3) and (2a - 1).
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