Question

Find the value of x in simplest radical form.

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Answer 1

Use a^2 + b^2 = c^2

(12)^2 + x^2 = (x+4)^2

144 + x^2 = x^2 +8x + 16

x^2 cancels out, and 144 - 16 = 128

8x = 128

x = 16

Answer 2

okay get it now thanks