Question

4- organize as seguintes equações de 2° grau para que fiquem na forma ax²+bxc=0

A) 3x²+x=12

B) 4x+2x²=x-5

C) x²+x+7=x+4

D) x(x+3)-5=0

E) 3(2x-5)=x(4-x)

F)(x+5)(x+2)=10

G) (x+1)(x-1)=x

H)(x+1)²=4x

Answer 1

A) 3x²+x=12 >>>>> 3x² +x -12 = 0

B) 4x+2x²=x-5 
     2x² +4x -x +5 >>> 2x² +3x +5 = 0

C) x²+x+7=x+4
     x² +x -x +7 - 4 >>>  x² +3 = 0

D) x(x+3)-5=0 >>>>> x² +3x -5 = 0

E) 3(2x-5)=x(4-x)
     6x - 15 = 4x - x²
     x² +6x -4x -15 >>>> x² +2x -15 = 0

F)(x+5)(x+2)=10
    x² +2x +5x +10 - 10 >>>>> x² +7x = 0
    
G) (x+1)(x-1)=x
      x² -x +x -1 -x >>>>  x² -x -1 = 0

H)(x+1)²=4x    
    x² + 2.x.1 + 1² - 4x =
    x² +2x +1 -4x >>>>>>> x² -2x +1 = 0