Question

-2x.(x-3)+3x(x+3)=10x+5

Answer 1

- 2x. (x -3) +3x. (x +3) = 10x +5

-2x² +6x + 3x² +9x = 10 x +5

 -2x² + 3x² +6x +9x -10x =5

 x² + 5x -5 =0
 Caso precise de báskara

a=1                Δ= b² -4. a. c = 5² -4. 1 .( - 5)

b=5                                          25 +20=45

c= -5               
    x=  - b +ou - √ Δ  =  -5 + 5  =0    e   -5  -5=   -10   = -5   S=(0 , -5)
          ___________    _____              _____     ___
                 2. a                 2                       2          2