Find an expression for the perimeter of a rectangle whose area is given by 2x^2 - 7x - 4?
- 6x + 10
- 6x - 6
- 3x - 3
- None of these
Explanation
Let's factor the area:
2x^2 - 7x - 4 = (2x + 1)(x - 4)
Assuming these are the length and width:
Length (L) = 2x + 1
Width (W) = x - 4
Perimeter = 2(L + W)
= 2(2x + 1 + x - 4)
= 2(3x - 3)
= 6x - 6
Related MCQs
- 2x + 2
- 2x - 8
- 2x - 5
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 2x² + 4 = 9x
- 2x² + 9 = 4x
- 2x² + 9 = 4x
- x² + 4 = 9x
اس سوال کو وضاحت کے ساتھ پڑھیں
