Answer:
Step-by-step explanation:To solve the quadratic equation x² - 3x - 10 = 0 using the quadratic formula, we first identify the values of a, b, and c:
a = 1
b = -3
c = -10
Now, we can apply the quadratic formula:
x = (-b ± √(b² - 4ac)) / (2a)
Plugging in the values, we have:
x = (-(-3) ± √((-3)² - 4(1)(-10))) / (2(1))
Simplifying further:
x = (3 ± √(9 + 40)) / 2
x = (3 ± √49) / 2
x = (3 ± 7) / 2
This gives us two possible solutions:
x₁ = (3 + 7) / 2 = 10 / 2 = 5
x₂ = (3 - 7) / 2 = -4 / 2 = -2
Therefore, the solutions to the equation x² - 3x - 10 = 0 are x = 5 and x = -2.