Question

escreva aa equacoes na forma geral e resolvaa a) x²+3=4x

Answer 1

x^2 + 3 = 4x
x^2 - 4x + 3 = 0

a = 1
b = - 4
c = 3

Delta = b^2 - 4.a.c
Delta = (- 4)^2 - 4.1.3
Delta = 16 - 12
Delta = 4

x = - b +- VDelta/2.a
x = - (- 4) +- V4/2.1
x = 4 +- 2/2

x' = 4 - 2/2
x' = 2/2
x' = 1

x" = 4 + 2/2
x" = 6/2
x" = 3

S = { 1, 3 }