Algebramedium · Past Paper
If the area of a rectangle is x^2 + 7x + 12 and its length is x + 4, find its width.
Ax + 3
Bx - 3
Cx + 4
Dx + 7
✓ Correct Answer: A — x + 3
Width = Area / Length = (x^2 + 7x + 12) / (x + 4) = (x+4)(x+3) / (x+4) = x+3.
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