Register
Solve x^2 - 3x + 5 = 0.
20.5k views
22 votes
Solve x^2 - 3x + 5 = 0.

Solve x^2 - 3x + 5 = 0.-example-1
User Andri
by
5.3k points

1 Answer

6 votes

Answer: A

Explanation:

x^2 - 3x + 5 = 0 - quadratic equation

Standard quadratic equation form: a^2 + bx + c = 0

  • Here a = 1, b = -3, c = 5

  • Discriminant formula: D = b^2 - 4ac

D = (-3)^2 - 4*1*5 = 9 - 20 = -11 (-11 < 0 => no real roots)

  • x1 = (-b - sqrt(D)) / (2*a)
  • x2 = (-b + sqrt(D)) / (2*a)

x1 = (3 - sqrt(-11)) / 2

x2 = (3 + sqrt(-11)) / 2

User Davextreme
by
5.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.9m questions

7.7m answers

Other Questions

Solve for y in terms of x. 2/3y - 4 = x y = x + 6 y = -x + 4 y = -x + 6 y = x + 4
Aliyah has $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?
Use the normal model ​n(11371137​,9696​) for the weights of steers. ​a) what weight represents the 3737thth ​percentile? ​b) what weight represents the 9999thth ​percentile? ​c) what's the iqr of the weights
Evaluate a + b when a = –16.2 and b = –11.4 A. –27.6 B. –4.8 C. 4.8 D. 27.6
What is the value of x? (-4) - x = 5
Link Copied!