Question

3 X square + 5 root 5 x minus 10 is equal to zero solve by quadratic method

Answer 1

Answer: x = (22/3)√5, -9√5

Step-by-step explanation:

3x^2 + 5√5 - 10

D = b^2 - 4ac, where, b=5√5, a=3, c=(-10)

D = 125 - 4 * 3 * (-10) = 245

x = (-b +- √D)/2a

Root 1:

x = (-5√5 + √245)/2*3

x = (-5√5 + 49√5)/6

x = (44/6)√5 or (22/3)√5

Root 2:

x = (-5√5 - √245)/2*3

x = (-5√5 - 49√5)/6

x = (-54√5)/6 = -9√5