How do you factor $x^{2} + 4 x + 3$ $x^2+ 4x + 3$ ?

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Answer 1 · 2016-04-17T16:03:25

(x + 1)(x + 3)

Since a - b + c = 0, use shortcut:
The 2 real roots are: -1 and -c/a = -3.
The 2 factor are: (x + 1) and (x + 3)
y = (x + 1)(x + 3)

How do you factor x2+4x+3x^2+ 4x + 3?