Question

Use the quadratic formula to find the roots of the equation. Round to tenths if necessary. 3x^2 - 4x - 8 = 0
A. {-1.7, 2.8}
B. {-2.8, 2}
C. {-1.1, 2.4}
D. no real solution

Answer 1

The answer is C you should do the same thing we did before

Answer 2

x=4+sqrt(16-4(3)(-8))/2(3)=2.4

Answer 3

and
x=4-sqrt(16-4(3)(-8))/2(3)=-1.1