Question

ESCREVA NA FORMA GERAL E RESUMA, EQUAÇÃO 2 GRAU
a) X ( X - 2 ) = 2 ( X + 6 )
b) X . ( 2 X - 1 ) + 6 = 4 . ( X + 1 )
c) ( X = 1 ) . ( X - 2 ) = 6
d) ( 2 X - 6 ) ( X - 8 ) = 34

Answer 1

Explicação passo-a-passo:

a) X ( X - 2 ) = 2 ( X + 6 )

x²-2x= 2x+12

x²-2x-2x-12= 0

x²-4x-12= 0

b) X . ( 2 X - 1 ) + 6 = 4 . ( X + 1 )

2x²-x+6= 4x+4

2x²-x-4x+6-4=0

2x²-5x+2= 0

c) ( X - 1 ) . ( X - 2 ) = 6

x²-2x-x+2-6= 0

x² - 3x - 4=0

d) ( 2 X - 6 ) ( X - 8 ) = 34

2x²-16x-6x+48= 34

2x²-22x+48-34= 0

2x²-22x+14= 0