Question

Determine whether the given value of x are the roots of given quadratic equation 6x^2 - x - 2 = 0 , x = -1/2, x= 5​

Answer 1

Answer:

5x2−6x−2=0

D=b2−4ac=36−4(5)(−2)=76

x=2a−b±D=10−(−6)±76=106±76=53±19

5x2−6x−2=5(53+19)2−6(53+19)−2

=59+19+619−5(18+619)−2 

=2−2=0

similarly (5