Question

(x+6)^2=(15-x)^2
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Answer 1

( x + 6 )^2 = ( 15 - x )^2
X^2 + 12x + 36 = 225 - 30x + x^2
12x + 36 = 225 - 30x
42x = 189
X = 4,5

Answer 2

4,5