To solve the equation x^2 + 2x – 3 = 0, we can use the quadratic formula:
x = (-b ± √(b^2 – 4ac)) / (2a)
In this equation, a, b, and c represent the coefficients of the quadratic equation:
a = 1 (coefficient of x^2) b = 2 (coefficient of x) c = -3 (constant term)
Now, let’s plug these values into the quadratic formula:
x = (-2 ± √(2^2 – 4(1)(-3))) / (2(1))
First, calculate what’s inside the square root:
2^2 – 4(1)(-3) = 4 + 12 = 16
Now, we can continue:
x = (-2 ± √16) / 2
Take the square root of 16:
x = (-2 ± 4) / 2
Now, we have two possible solutions:
- x = (-2 + 4) / 2
- x = (-2 – 4) / 2
Let’s calculate each solution separately:
- x = (2) / 2 = 1
- x = (-6) / 2 = -3
So, the solutions to the equation x^2 + 2x – 3 = 0 are:
x = 1 and x = -3