Answer: x = 9
2x -6= x +3
2x -x= 3 +6
x= 9
Answer:
x^2 - 9
Explanation:
length = 2x - 6 = 2(x-3)
Area = [2(x-3) * (x + 3)]/2 = (x-3)(x+3) = x^2-9
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