Question

Solve the following equation by using the QUADRATIC FORMULA

x2 – 5x – 12 = 0

Show how you got that answer

Answer 1

x=(5+√73)/2 or x=(5-√73)/2

Explanation:

a=1 b=-5 c=-12

x= (-b+/-√b^2-4ac)/2a

x= (-(-5)+/-√(5)^2-4(1)(-12))/2(1)

x= (5+/-√25-4(-12))/2

x= (5+/-√25+48)/2

x= (5+/-√73)/2

x=(5+√73)/2 or x=(5-√73)/2

√: This symbol represents the square root if you get confused.