Answer:
-2 + √3 and -2 - √3
Step-by-step explanation:
You need to use quadratic equation to solve this,
The general form of a quadratic is y = ax² + bx + c
Quadratic equation is
x = (-b)/(2a) ± [√(b² - 4ac)]/(2a)
Here, a = 1, b = 4, and c = 1, plug those values in and solve for x
x = (-4)(2*1) ± [√(4² - 4(1)(1))]/(2*1)
x = -4/2 ± [√(16 - 4)]/2
x = -2 ± (√12)/2
√12 = (√4)(√3) = 2√3 so
x = -2 ± (2√3)/2
x = -2 ± √3
So
x = -2 + √3 and x = -2 - √3
