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# Completing the Square

SATMAT-IWUV21

Which of the following is a solution to ${ x }^{ 2 }+4x+3=a$, where $a$ is any real number?

A

$x=-3$

B

$x=\sqrt { a-1 }$

C

$x=\sqrt { a+1 }$

D

$x=\sqrt { a+1 } -2$