Question

x(x+3)=x² +6  băng bao nhiu z 

Answer 1

x ( x + 3 ) = x² + 6

=> x² + 3x = x² + 6

=> x² + 3x - x² = 6

=> 3x = 6

=> x = 2

Answer 2

Ta có :  2x - 36 = 48 

=> 2x = 48 + 36 

=> 2x = 84

=> x = 84 : 2

=> x = 42

Answer 3

x(x+3)=x² +6

<=>x²+3x=x²+6

<=>x²+3x-x²+6=0

<=>(x²-x²)+3x+6=0

<=>0+3x+6=0

<=>3x=-6

<=>x=-2

Answer 4

co ai bt giai cau naay hk

Answer 5

x ( x + 3 ) = x² + 6

= > x² + 3x = x² + 6

=> x² - x² + 3x = 6

=> 3x   = 6

=> x = 2

Answer 6

may bn hx lp may z

sao giai hay z

Answer 7

bn giai dung r

Answer 8

Kay Phạm-_- bạn đúng nhầm người rồi nó copy tui mà với lại nó sai

Answer 9

x(x+3)=x² +6

<=>x²+3x=x²+6

<=>x²+3x-x²+6=0

<=>(x²-x²)+3x+6=0

<=>0+3x+6=0

<=>3x=-6

<=>x=-2

Answer 10

x(x+3)=x² +6

<=>x²+3x=x²+6

<=>x²+3x-x²+6=0

<=>(x²-x²)+3x+6=0

<=>0+3x+6=0

<=>3x=-6

<=>x=-2

Answer 11

Ta có : 

x(x+3)=x² +6

<=>x²+3x=x²+6

<=>x²+3x-x²+6=0

<=>(x²-x²)+3x+6=0

<=>0+3x+6=0

<=>3x=-6

<=>x=-2

Answer 12

Ta có : 

x(x+3)=x² +6

<=>x²+3x=x²+6

<=>x²+3x-x²+6=0

<=>(x²-x²)+3x+6=0

<=>0+3x+6=0

<=>3x=-6

<=>x=-2