How do you solve the quadratic using the quadratic formula given x^2-3x+10=0?

2 Answers
Nov 9, 2016

0=x^2-3x+10

Quadratic formula:
x=(-b+-sqrt(b^2-4ac))/(2a)

x=[-(-3)+-sqrt((-3)^2-4(1)(10))]/[2(1)]

Simplify:
x=[3+-sqrt(-31)]/[2]

x=[3+-isqrt31]/2

Nov 9, 2016

x=(3+sqrt(31)i)/2, (3-sqrt(31)i)/2

Explanation:

x^2-3x+10=0 is a quadratic equation in the form ax^2+bx+c, where a=1, b=-3, and c=10.

Quadratic Formula

x=(-b+sqrt(b^2-4ac))/(2a)

x=(-(-3)+-sqrt((-3)^2-4*1*10))/(2*1)

x=(3+-sqrt(9-40))/2

x=(3+-sqrt(-31))/2

x=(3+sqrt(31)i)/2, (3-sqrt(31)i)/2