Question

escreva na forma ax² + bx +c=0 as equaçoes do 2° grau a seguir
A) x²-2x=2x-4
B)(2x+3)²=(-x-5)
C)x²+3x(x-12)=0

Answer 1

a)x²-2x=2x-4
x²-2x-2x+4=0
x²-4x+4=0

b)(2x+3)²=(-x-5)
4x²+12x+9=-x-5
4x²+12x+9+x+5=0
4x²+13x+14=0

c)x²+3x(x-12)=0
x²+3x²-36x=0
4x²-36x=0