Question

Find the roots of the quadratic equation 11(x + 1)(x - 1) + 2(x + 3) = 1​

Answer 1

Answer:

11(x²-1) + 2x+6= 1

11x² - 11 + 2x+6= 1

11x² +2x - 6=0

D = b²-4 ac

D = 4- 264

D = -260

X=( -b ± √D)/2a

X = (-2±√-260)/22

X = (-2 ± 2 √65 i)/22

X = (-1±√65i) /11