What are all the values of x that satisfy the equation x2+4x+3 = 0?

-3

-1

-3 and -1

3 and 4

None of these

Description (বিবরণ) :

প্রশ্ন: What are all the values of x that satisfy the equation x2+4x+3 = 0?

ব্যাখ্যা:

Here, x2 + 4x + 3 = 0

 

or, x2 + 3x + x + 3 = 0

or, x(x + 3) + 1(x + 3) = 0

or, (x + 3)(x + 1) = 0

So,  x + 3 = 0   or, x + 1 = 0

or, x = - 3, - 1

 

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