Question

alguem sabe esse calculo ;
2 x²+x=15

Answer 1

2x²+x-15
a=2 b=1 c=-15
bhaskara
(-1)+-raiz de (1)²-4.2.(-15)
         2.2
(-1)+-raiz de 121
         4
-1+-11
   4
x1= 10/4
x2=-12/4=-3