Question

x²+4x +3=0 disriminante
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Answer 1

X²+4X+3=0

or X²+3X+X+3=0

or X(X+3)+1(X+3)=0

or (X+1)(X+3)=0

or X=-1 orX=-3

Therefore X=-1 or-3 is the required solution.

Hope this will help you.

Answer 2

Step-by-step explanation:

${x}^{2} + 4x + 3 = 0 \\ ⇒ {x}^{2} + 3x + x + 3 = 0 \\ ⇒x(x + 3) + 1(x + 3) = 0 \\ ⇒(x + 3)(x + 1) = 0$

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Either,

$x + 3 = 0 \\ ⇒x = -3$

Or,

$x + 1 = 0 \\ ⇒x = -1$