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WITCHER [35]
3 years ago
7

Given the diagram below find the value of x if the area is 21 aquare meters

Mathematics
1 answer:
Oksanka [162]3 years ago
5 0

Answer:

The answer is <u><em>7</em></u>!

Step-by-step explanation:

(x-4) (x) = 21, x^2 - 4x = 21, x^2 - 4x - 21 = 0, (x - 7) (x + 3) = 0, x = 7 and -3; x can't be negative so the answer is 7!

x = 7 and x - 4 (other side) = 3

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