Question

''RESOLVA AS EQUAÇOES''
x²+5x-24=0

mim da a conta toda

Answer 1

$x^{2} +5x-24=0 \\ \\ \Delta=b^2-4.a.c \\ \\ \Delta=5^2-4.1.(-24)=25+96=121 \\ \\ x=\frac{-b \pm\sqrt{\Delta}}{2.a} \\ \\ x=\frac{-5 \pm \sqrt{121}}{2.1}=\frac{-5 \pm11}{2} \\ \\ x_1=\frac{-5-11}{2}=-8 \\ \\ x_2=\frac{-5+11}{2}=3$