Question

x ao quadrado +3x-10=0​

Answer 1

x² +3x -10 = 0 ===> por fatoração

(x -2). (x +5)=0

x'=2......x"=-5

bhaskarando:

∆= 3² -4.1.(-10)=9+40=49=>√∆=7

x= -b±√∆/2a

x= -3±7/2.1

x' = -3+7/2 = 4/2 = 2✓

x" = -3-7/2 = -10/2 = -5✓