Question what-i
What is the solution to the equation above?
0
2
3
5
What is the solution to the equation above?
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 B is correct. Since is equivalent to 1, the right-hand side of the given equation can be rewritten as
, or
. Since the left- and right-hand sides of the equation
have the same denominator, it follows that
. Applying the distributive property of multipliion to the expression
yields
, or
. Therefore,
. Subtracting x and 2 from both sides of this equation yields
.
Choices A, C, and D are incorrect. If , then
. This can be rewritten as
, which is a false statement. Therefore, 0 isn’t a solution to the given equation. Substituting 3 and 5 into the given equation yields similarly false statements.
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