In which line is a mistake first made when solving the quadratic equation using the quadratic formula? 4s2 + 100 = 40s line 1 4s2 - 40s + 100 = 0 line 2 s2 - 10s + 25 = 0 line 3 s equals fraction numerator negative 10 space plus-or-minus space â 102 minus 4 left parenthesis 1 right parenthesis left parenthesis 25 right parenthesis over denominator 2 left parenthesis 1 right parenthesis end fraction line 4 s equals fraction numerator negative 10 space plus-or-minus space 0 over denominator 2 end fraction line 5 s = -10 / 2 line 6 s = -5