Question

resolva a equação 2x(x+2)=4(x+3)

Answer 1

2x (x +2) = 4(x +3)
2x² +4x = 4x +12
2x² +4x -4x = 12
2x² +0x -12
Δ= b² -4ac
Δ= 0² -4.2.(-12)
Δ= 96

x= -b +/- √Δ / 2a
x= √96 / 2.2
x'= 9,79 / 4
x'= 2,4475

x''= -2,4475

Bons estudos!

Answer 2

2x (x +2) = 4(x +3)
2x² +4x = 4x +12
2x² +4x -4x = 12
2x² +0x -12
Δ= b² -4ac
Δ= 0² -4.2.(-12)
Δ= 96

x= -b +/- √Δ / 2a
x= √96 / 2.2
x'= 9,79 / 4
x'= 2,4475

x''= -2,4475