Question

ME AJUDEM POR FAVOR , 50 PTS
1 ) 5x(x-3)=2x(2x-6)=0
2 ) x²-0,3x=0
3 ) 4x-9x=0

Answer 1

1) 5x(x-3)=2x(2x-6)=0
5x^2-15x=4x^2-12x
5x^2-4x^2-15x+12x
x^2-3x=0
x(x-3)=0
x=0
x-3=0
x=0+3
x=3
2) x^2-0,3x=0
delta=b^2-4ac
delta=(-0, 3)^2-4.1.0
delta=0,09-0
delta=0,09
x=-b-/+ raiz de delta/2a
x=-(-0,3)-0,3/2.1
x=0,3-0,3/2
x=0/2
x=0
x=-(-0,3)+0,3/2.1
x=0, 3+0,3/2
x=0,6/2
x=0,3
3) 4x-9x=0
-5x=0. (-1)
5x=0
x=0/5
x=0