Question

resolva as equações do 2 grau,
3x²-50=-2

B) x²-12x=0

C)-2x²+10x=0

calculo pfv...

Answer 1

A)3x² - 50 = -2

3x² = +50 - 2

3x² = 48

x² = 48/3

x² = 16

x = √16

x= 4

B) x²-12x = 0

x² = 12

x= √12

x≈ 3.46

C) -2x² +10x = 0

-2x² = -10 × (-1)

2x² = 10

x² = 10/2

x² = 5

x= √5

x≈ 2.23