39.9k views
2 votes
How do I Solve x2 + 7x -20 = 0 using a quadratic formula?

User Amon C
by
7.7k points

1 Answer

3 votes

Answer:

We first must determine the coefficients

a = 1

b = 7

c = -20

Then we use the quadratic formula:

x = [-7 +- sqr root (7^2 - 4 * 1 * -20)] / 2 * 1

x = [-7 +- sqr root (129)] / 2

x1 = 4.3578166916 / 2

x1 = 2.1789083458

x2 = -18.3578166916 / 2

x2 = -9.1789083458

Explanation:

How do I Solve x2 + 7x -20 = 0 using a quadratic formula?-example-1
User Flexabust Bergson
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories