What are the solutions of x^2-4x-9=29

Question

Mathematics

Zachary Massey

25 April, 20:51

What are the solutions of x^2-4x-9=29

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Answers (2)

Know the Answer?

Aniya Ellis · Answer 1

x = - 4.48, 8.48 to the nearest hundredth.

Step-by-step explanation:

x^2 - 4x - 9 = 29

Completing the square:

(x - 2) ^2 - 4 - 9 = 29

(x - 2) ^2 = 29 + 13 = 42

x - 2 = + / -√42

x = 2 + / -√42

x = 8.48, - 4.48.

Sarah · Answer 2

Answer: x = (4-√168) / 2=2-√ 42 = - 4.481

x = (4+√168) / 2=2+√ 42 = 8.481