Question

x^2-8x=0
x^2-12x+32=0
x^2-8x+16=0
x^2-25=0

Answer 1

Explicación paso a paso:

1.x^2-8x=0

2x^2=+8

x=√4

x=2

RPTA: 2

2. x^2-12x+32=0

x -8 = -8x

x -4 = -4x

x-8=0 x-4=0

x= +8 x= +4

RPTA: C.S={8;4}

3. x^2-8x+16=0

x -4 = -4x

x -4 = -4x

x-4=0. x-4=0

x= +4. x= +4

RPTA: C.S={4}

4. x^2-25=0

x^2=+25

x=5

RPTA: 5