Respuesta :

i hope this helps you



-2x+7x-7.7= -84


5x-49= -84


5x= -84+49


5x= -35


x = -7
-2 × X + 7 × (X - 7) - (-84) = 0 

(-2X + 7 × ( X - 7))) - -84 =  0 

5X + 35 = 5 × ( X + 7)

5 × ( X + 7) = 0 

Solve →   5 =0 

X+ 7 = 0 

Subtract "7" from both sides of the equation

Final answer → "x" = -7