Question

Resolva, no conjunto R, as equações a seguir.
a) 9x² - 4=0
b) -2x + 18 = 0
c) 6ť – 6=0
d) -10x + 10x=0
e) x - 3x +2=0 f) x + 6x +10=0
g) 6x’ - 5x + 1 = 0 h) 3x - 14x+8=0
i) -4x+10X-6=0​

Answer 1

a) 9x² - 4 = 0

9x² = 4

x² = 4/9

x = √4/√9

x = ±2/3

b) -2x + 18 = 0

-2x = -18 .(-1)

2x = 18

x = 18/2

x = 9

c) 6ť – 6=0

6t = 6

t = 6/6

t = 1

d) -10x + 10x = 0

0 = 0

e) x - 3x + 2 = 0

-2x = -2 .(-1)

x = 2/2

x = 1

f) x + 6x +10 = 0

7x = -10

x = -10/7

g) 6x’ - 5x + 1 = 0

x = -1

h) 3x - 14x + 8 = 0

-11x = -8 .(-1)

x = 8/11

i) -4x + 10X - 6 = 0

6x = 6

x = 6/6

x = 1

Espero ter ajudado <3