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Question

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

ANSWER : 3

Descrption

<p><span style = "box - sizing: border - box; font - size: 18px; color: #212529; font - family: bangla, sans - serif; text - align: justify; background - color: #ffffff;">Here, x<sup>2</sup>  +  4x  +  3  =  0</span></p>
<p>&nbsp;</p>
<p><span style = "box - sizing: border - box; font - size: 18px; color: #212529; font - family: bangla, sans - serif; text - align: justify; background - color: #ffffff;">or, x<sup>2</sup>  +  3x  +  x  +  3  =  0</span></p>
<p><span style = "box - sizing: border - box; font - size: 18px; color: #212529; font - family: bangla, sans - serif; text - align: justify; background - color: #ffffff;">or, x(x  +  3)  +  1(x  +  3) = 0</span></p>
<p><span style = "box - sizing: border - box; font - size: 18px; color: #212529; font - family: bangla, sans - serif; text - align: justify; background - color: #ffffff;">or, (x  +  3)(x  +  1) = 0</span></p>
<p><span style = "box - sizing: border - box; font - size: 18px; color: #212529; font - family: bangla, sans - serif; text - align: justify; background - color: #ffffff;">So,&nbsp; x  +  3 = 0&nbsp; &nbsp;or, x  +  1 = 0</span></p>
<p><span style = "box - sizing: border - box; font - size: 18px; color: #212529; font - family: bangla, sans - serif; text - align: justify; background - color: #ffffff;">or, <strong>x =  - 3,  - 1</strong></span></p>
<p><span style = "box - sizing: border - box; font - size: 18px; color: #212529; font - family: bangla, sans - serif; text - align: justify; background - color: #ffffff;">&nbsp;</span></p>

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