Question

Use the quadratic formula and a calculator to find all real solutions, correct to three decimals.

x2 − 0.017x − 0.064 = 0

Answer 1

The quadratic formula says:


\(\Large \color{MidnightBlue}{\Rightarrow x= {-b \pm \sqrt{b^2 - 4ac} \over 2a} }\)

Answer 2

Here, a = 1
b = 0.017
c = -0.064

Answer 3

Use your calculator to bring down the solution.

Answer 4

x+1.581
x-1.581

x={-1.581,1.581}

Answer 5

Why is it not -.017?

Answer 6

Oh yes it is.

Answer 7

Thanks