Question

coloque na forma: ax²+bx+c=0 as sequintes equaçoes do 2° gral
RESOLVIDO :x(x-2)=3(x+6)

a) 5x+3x²=4x-7

b)x²+4x=2(x-1)

c)x(2x-3)=4x-1

Answer 1

Olá Luanacristina

1) x*(x - 2) = 3(x + 6)

x² - 2x = 3x + 18 

x² - 5x - 18 = 0 

a)

5x + 3x² = 4x - 7

3x² + 5x - 4x + 7 = 0

3x² + x + 7 = 0 

b)

x² + 4x = 2*(x - 1)

x² + 4x = 2x - 2

x² + 4x - 2x + 2 = 0

x² + 2x + 2 = 0 

c)

x*(2x - 3) = 4x - 1

3x² - 3x = 4x - 1

3x² - 7x + 1 = 0