Kathy P. answered 12/08/20
Mechanical Engineer with 10+ years of teaching and tutoring experience
x^2 + (x+28)^2 = 52^2 Pythagorean Theorem
x^2 + x^2 + 2(28)x + 28^2 = 52^2 Expand
2x^2 + 56x + 784 = 2704
2x^2 + 56x - 1920 = 0
x^2 +. 28x - 960 = 0
x = [ - 28 =/- sqrt ( 28^2 - 4(a)(-960) ) ] / 2
x = [ -28 =/- 68 ] / 2
x = 40/2 = 20 Use positive solution.
Length of sides:
x = 20
(x + 28) = 48