Verified answer

Ответ:

5(х²+2х)=3(4х+1)

5х²+10х=12х+3

5х²+10х-12х=3

5х²-2х=3

5х³-2х-3=0

(5х²-5х)+(3х-3)

5х(х-1)+3(х-1)

(х-1)(5х+3)

х-1=0 та 5х+3=0

х=1 і х=-0,6

Ответ:

( 5x² + 2x ) = 3 ( 4x+1 )

( 5x² + 2x ) - 3 ( 4x+1 ) = 0

5x² + 10x - 12x - 3 = 0

5x² - 2x - 3 = 0

5x² + 3x - 5x - 3 = 0

x ( 5x + 3 ) - ( 5x + 3 ) = 0

( 5 x + 3 ) ( x - 1 ) = 0

x - 1 = 0

5x + 3 = 0

x1 = 1

x2 = -0,6