Question

calcule as raízes das equações
a) -3x^2+6x

b) (2x-5)^2=-4x+25

c) 4x^2-1296=0

Answer 1

a)x(-3x+6)=0

x'=0

x''=-3x+6=0

-3x=-6

x=-6/-3

x=2

b)2x²+4x=0

x(2x+4)=0

x'=0

x"=2x+4=0

2x=-4

x=-4/2

x=-2

c)4x²-1296=0

4x²=1926

x²=1926/4

x²=324

x=√324

x=±18

ESPERO TER AJUDADO