Question

find the length

and breadth of a rectan
-gle whose length, breadth and area are
2x+1, X-3 and 9 sq.units respectively​

Answer 1

Answer:

9,1

Step-by-step explanation:

lb = area

(2x+1)(x-3) = 9

2x²-5x-3 = 9

2x²-5x-12 = 0

2x²-8x+3x-12 = 0

2x(x-4)+3(x-4) = 0

(2x+3)(x-4) = 0

so, x = -3/2 or 4

x can't be negative .so,

x= 4

length = 2x + 1 = 9 units

breadth = x-3 = 1 unit

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