the length and perimeter of a rectangle are (6a2+2x-7)units and (3 a3-x+5)units respectively.find the breath of the rectangle
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Answer:
L=6a²+2x-7
Perimeter=3a³-x+5
Perimeter=2(6a²+2x-7+B)
3a³-x+5=2(6a²+2x-7+B)
3a³-x+5-12a²-4x+14=2B
B=3a³-12a²-5x+19/2
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