246,600 views
23 votes
23 votes
Using the quadratic formula, which of the following are the zeros of the quadratic equation below? y=x^2-x-5

User Mossplix
by
2.8k points

2 Answers

23 votes
23 votes

Answer:

The roots(Zeros) are

x=2.7913 and -1.7913

User Gannon
by
3.0k points
8 votes
8 votes

Final Answer:

The zeros of the quadratic equation y = x^2 - x - 5 are x = -1 ± √19.

Step-by-step explanation:

We can find the zeros of the quadratic equation using the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / 2a

where a, b, and c are the coefficients of the quadratic equation. In this case, a = 1, b = -1, and c = -5. Substituting these values:

x = (-(-1) ± √((-1)^2 - 4 * 1 * -5)) / 2 * 1

x = (1 ± √(1 + 20)) / 2

x = (1 ± √21) / 2

Therefore, the zeros of the equation are:

x = (1 + √21) / 2 ≈ 3.618

x = (1 - √21) / 2 ≈ -2.618

Combining these solutions, the zeros of the quadratic equation y = x^2 - x - 5 are x = -1 ± √19.

User Aleksei Zyrianov
by
2.7k points