Question

Solve the following are quadratic equations by quadratic formula 1 9xsqure + 7x -2=0

Answer 1

Answer:

9x²+7x-2=0

a=9

b=7

c= -2

quadratic formula:

x=( -b±√(b²-4.a.c))/2×a

x=( -7±√(7²-4.9.-2))/2×9

x=(-7±√(49+72))/18

x=(-7±√(121))/18

x=(-7±11)/18

x=( -7+11)/18 or. x= (-7-11)/18

x=4/18 or x= -18/18

x=2/9 or x= -1