Question 5-x-2-

2.2 Nonlinear Equations in One Variable - Quadratic solving (factoring, quadratic formula, completing square)
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5 x 2 - 37 x - 24 = 0

What is the positive solution to the given equation?

A.

3 5

B.

3

C.

8

D.

37

5 x 2 - 37 x - 24 = 0 What is the positive solution to

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 C is correct. The left-hand side of the given equation can be factored as 5x+3x-8. Therefore, the given equation, 5x2-37x-24=0, can be written as 5x+3x-8=0. Applying the zero product property to this equation yields 5x+3=0 and x-8=0. Subtracting 3 from both sides of the equation 5x+3=0 yields 5x=-3. Dividing both sides of this equation by 5 yields x=-35. Adding 8 to both sides of the equation x-8=0 yields x=8. Therefore, the two solutions to the given equation, 5x2-37x-24=0, are -35 and 8 . It follows that 8 is the positive solution to the given equation.

Choice A is incorrect and may result from conceptual or calculation errors.

Choice B is incorrect and may result from conceptual or calculation errors.

Choice D is incorrect and may result from conceptual or calculation errors.