Answer:
(5 ± √(17)) ÷ 2
Explanation:
x² means just 1 multiplied by x². think of it as a '1' in front.
1 and -5 are coefficients. 2 is a constant (meaning it is not with either an x).
x is a variable.
the quadratic formula is:
x = (-b ± √(b² - 4ac) ÷ 2a)
where a is the value of the first coefficient, b is value of the second and c is value of the constant.
for our question:
x = (- (-5) ± √((-5)² - 4(1)(2)) ÷ 2(1)
= (5 ± √(25 - 8)) ÷ 2
= (5 ± √(17)) ÷ 2
This is our answer.
if required as decimal 0.438 and 4.56