Question

RESOLVAS ESSAS EQUAÇÕES PFV

ײ-8×=0
ײ+3×=0
9ײ=5×
5ײ= -10×

Answer 1

x²-8x=0
x(x-8)=0
x=0
(x-8)=0
x= +8. s= {0,8}

-

x²+3x=0
x(x+3)=0
x=0
(x+3)=0
x=-3. s= {0,-3}

-

9x²=5x
9x²-5x=0
x(9x-5)=0
x=0
(9x-5)=0
9x=5
x= 5/9
x= √5/√9
x= √5/3. s= {0,√5/3}

-


5x²=-10x
5x²+10x=0
5x(x+2)=0
x=0
(x+2)=0
x=-2. s= {0,-2}

Answer 2

Olá Ruan !

ײ-8×=0

x • (x - 8) = 0

x= 0

x - 8 =0

x= 0 + 8

x= 8

S= ( 0 , 8)

ײ+3×=0

x • (x + 3) = 0

x= 0

x + 3 = 0

x= 0 - 3

x= - 3

S= ( 0, - 3)

9ײ=5×

9x² - 5x = 0

x • (9x - 5) = 0

x= 0

9x - 5 = 0

9x=0 + 5

9x =5

x= 5/9

S= ( 0 , 5/9)

5ײ= -10×

5x² + 10x = 0

5x • (x + 2) = 0

x= 0

5x + 10 = 0

5x = 0 - 10

5x = - 10

x= - 10/5

x= - 2

S= ( 0 , - 2)