Answer:
A = 5
C = 20x + 5
Explanation:
x^2 = 10x - 20
x^2 - 10x + 20 = 0
x^2 + 10x - 20x + 25 - 5 = 0
(x^2 + 2(5)x + 25) - (20x + 5) = 0
(x + 5)^2 = 20x + 5
x + 5 = ±√(20x + 5)
x = - 5 ±√(20x + 5)
I hop this will help
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