212k views
3 votes
Solve by completing the square:
x^2 + 4x - 5 = 0

User Strelok
by
7.7k points

2 Answers

4 votes

Answer:

(1, -5)

Explanation:

x² + 4x - 5 = 0

(x - 1)(x + 5)

x - 1 = 0

x = 1

x + 5 = 0

x = -5

User Nicolas Pierre
by
7.9k points
6 votes

Answer:

x = 1, -5

Explanation:

Use the formula (b/2)^2 in order to create a new term. Then, you solve for x by using this term to complete the square.

User TigOldBitties
by
8.0k points

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