Mathematics, 18.03.2021 03:30 rj1262004
4. In the diagram, the dimensions of the larger rectangle are (3x – 1) by (3x + 7)
units. The dimensions of the cut-out rectangle are x by 2x + 5 units. Which choice
expresses the area of the shaded region, in square units?
I
3x - 1
x
2x + 5
3x + 7
[A] x2 + 23x - 7
[B] x2 + 13x – 7
[C] 7x2 + 23x - 7
[D] 7x2 + 13x - 7
Answers: 3
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4. In the diagram, the dimensions of the larger rectangle are (3x – 1) by (3x + 7)
units. The dimen...
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