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SAT® Math

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Moderate

Solving with a Mystery Number

SATMAT-IVGK4K

Which of the following are all the solutions to the equation $ { x }^{ 2 }+2x\left( a+1 \right) +4a=0 $?

A

$ x=2, x=2a $

B

$ x=-2, x=-2a $

C

$ x=2, x=-a $

D

$ x=-2, x=a $