Question

alguém me ajuda a fazer todos?

Answer 1

k) x(x + 1).(x + 2).(x + 3) = 0, logo temos

x = 0

x + 1 = 0 => x = -1

x + 2 = 0 => x = -2

x + 3 = 0 => x = -3

m) 5/x+ 1 = 0 => 5 = (x + 1).0 => 5 = 0, absurdo

n) (x + 2)/3x = 1 => x + 2 = 3x => 3x - x = 2 => 2x = 2 => x = 2/2 => x = 1

o) (2x - 1)/(x + 4) = 1 => 2x - 1 = x + 4 => 2x - x = 4 + 1 => x = 5

s) 81/3x = 1 => 3x = 81 => x = 81/3 => x = 27

t) 1 = 29/2ˣ - 3 => 2ˣ - 3 = 29 => 2ˣ = 29 + 3 => 2ˣ = 32 => 2ˣ = 2⁵ => x = 5