7
advanced-math

Find the discriminant of 3x2−2x+1=03x^2 - 2x + 1 = 0.

A

-8

B

8

C

16

D

0

Correct Answer: A

Choice A is the correct answer.

  1. a=3,b=−2,c=1a=3, b=-2, c=1.
  2. Δ=(−2)2−4(3)(1)\Delta = (-2)^2 - 4(3)(1).
  3. Δ=4−12=−8\Delta = 4 - 12 = -8.

Choice B is incorrect because it adds 4+124+12. Choice C is incorrect because it calculates (−2)2+12(-2)^2 + 12. Choice D is incorrect.

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Set 11: Quadratic Equations and Functions 11