Answer:
x=5
Explanation:
In a square, the diagonals are equal.
4x+17 = 12x-23
Subtract 4x from each side.
4x-4x+17 = 12x-4x-23
17 = 8x-23
Add 23 to each side
17+23 = 8x-23+23
40 = 8x
Divide each side by 8
40/8 = 8x/8
5 =x
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