Question if-x-i
If x is a solution to the given equation, which of the following is a possible value of ?
If x is a solution to the given equation, which of the following is a possible
Hard-difficulty · SAT Math · Nonlinear Equations in One Variable — Quadratic solving (factoring, quadratic formula, completing square). Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice A is correct. The given equation can be rewritten as . Multiplying both sides of this equation by
yields
. Dividing both sides of this equation by 4 yields
. Taking the square root of both sides of this equation yields
or
. Therefore, a possible value of
is
.
Choices B, C, and D are incorrect and may result from computational or conceptual errors.
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