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cluponka [151]
2 years ago
10

A rectangular swimming pool has length (x + 4) meters and width (x - 2) meters. The area of the

Mathematics
1 answer:
Komok [63]2 years ago
6 0

Answer:

The length if the pool is 12

Step-by-step explanation:

Formula: A=lw or lw=A

> (x+4)(x-2)=72

> (x²-2x+4x-8)=72

> x²+2x-8=72

> x²+2x-8-72=0

> x²+2x-80=0

Factor

> x²+10x-8x-80

> x(x+10)-8(x+10)

>(x+10)(x-8)

Check:

(x-4); (x-2); x=8

(8+4)=12 Length

(8-2)=6 Width

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