Question

Resolva as equações do 2º grau:
A) X² - 5x +6=0
B) X² - 8x +12= 0
C) X²+2x - 8=0
D) 2X² - 8x + 8 =0
E) X² - 36 = 0
F) X² - 64 = 0
G) X² + 4x= 0
H) X² - 10x= 0

Answer 1

x²-5x+6=o
a=1 b=-5 c=6
X=b+-√-b²-4ac÷2
X=-5+-√-(-5²)-4.1.6÷2
X=-5+-√1
X'=-5+1÷2>X'=-4÷2 X'=-2
X"=-5-1÷2>X"=-6÷2 X"=-3