Answer
(x-4)(x-1) is the factor and then solve for x which is x=4 and x= 1
Factor x^2 + 4x + 3
(x + 1)(x + 3) = 0
Solve for x
Ask, when will (x + 1)(x + 3) equal zero?
When x + 1 = 0 or x + 3 = 0
Solve each of the two equations above
Answer: x = -1, -3
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