Solve the following equation using the quadratic formula 2x2
Solve the following equation using the quadratic formula
2x^2 - 3x -1= 0
The solution set is:
Solution
2x^2-3x-1
standard quadratic equation is
ax^2 +bx+c=0
a = 2 , b = -3 , c = -1
applying quadratic formula
x = { -b+- sqrt (b^2 - 4ac) } / 2a
plugging the values
x = { 3 + - sqrt ( 9 + 8) } / 4
x =( 3 + - sqrt 17) / 4
solution set is
x = ( 3 + sqrt 17) / 4 , ( 3 - sqrt 17) / 4
