Question

Use the quadratic formula to solve 25 w^2 + 20 w -23 = 0

I got: (2/5)+/-{[1i sqrt(19)]/5}

Answer 1

There's some mistake i think.

Answer 2

yes

Answer 3

\[\sqrt{20^2 - 4(25)(-23)}\to \sqrt{2700} \to 30\sqrt3\]

Answer 4

i forgot the - on 23. :(

Answer 5

Final answer should be \[w=\pm \frac{\left(3 \sqrt{3}-2\right)}{5} \]