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(x - 3) V (x - 5)
x = 3 V x = 5
b). x^2 + 6x = 0
x(x + 6)
x = -6
c).x+3 = 60/x-1 -> x^2 + 2x - 3 = 60
x^2 + 2x - 63 = 0
( × +- . . ) V (x +- . . )