Question

105=x+2x²
Aiudaaaaaa!!!!!

Answer 1

$105=2 x^{2} +x \\ 2 x^{2} +x-105=0 \\ Aplicando\hspace{2mm}la\hspace{2mm}ecuacion: \\ x= \frac{-b+- \sqrt{ b^{2}-4ac} }{2a} \\ \\ a=2 \\ b=1 \\ c=-105 \\ \\ x= \frac{-1+- \sqrt{ 1^{2}-[4*2*(-105)]} }{2*2} \\ x= \frac{-1+- \sqrt{1-4*(-210)} }{4} \\ x= \frac{-1+- \sqrt{1+840} }{4} \\ \\ x= \frac{-1+-29 }{4} \\ \\ x1= \frac{-30}{4} =-7.5 \\ \\ x2= \frac{28}{4} =7$

Answer 2

Respuesta:

2x²+1-105 = a:2 b:1 c:(-105)