Question

equações incompletas

d)4x²-12x=0

e)4x²-9x=0

f)9x²=0

Answer 1

d)4x²-12x=0

x( 4x - 12) = 0

x1=0

4x - 12 = 0 ==> 4x2 =12 ==> x2 = 3
=================================
e)4x²-9x=0

x( 4x - 9) = 0
x1=0

4x - 9 = 0 ==> 4x2 =9 ==> x2 = 9/4
=================================
f)9x²=0 ==> x = 0

Answer 2

d)4x²-12x=0

4x • (x - 3)= 0

x= 0

4x - 12 = 0

4x = 0 + 12

4x = 12

x= 12/4

x= 3

S= ( 0 , 3)

e)4x²-9x=0

x • (x - 9) = 0

x= 0

4x - 9 = 0

4x= 0 + 9

4x = 9

x= 9/4

S= ( 0 , 9/4)

f)9x²=0

x² = 0/9

x²= 0

x= √0

x=0

S= ( 0 )