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Licemer1 [7]
2 years ago
15

The area of square abcd is 7cm^2 show that x^2+4x=3

Mathematics
1 answer:
AveGali [126]2 years ago
4 0

Answer:

see explanation

Step-by-step explanation:

The area (A) of the square = s² ( s is the measure of the side )

Here s = x + 2 and A = 7 , thus

(x + 2)² = 7 ← expand left side using FOIL

x² + 4x + 4 = 7 ( subtract 4 from both sides )

x² + 4x = 3 ← as required

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