a) 15x + 15y = 15(x + y)
b) 6x - 10y = 2(3x - 5y)
c) 2a + 4b - 6c = 2(a + 2b - 3c)
d) 6xy - 12x - 18y = 6(xy - 2x - 3y)
e) 2(x + y) - 5a(x + y) = (2 - 5a)(x + y)
f) 6x(x - y) + 5(y - x) = 6x(x - y) + (-5)(x - y) = (6x - 5)(x - y)
a) \(15x+15y=15\left(x+y\right)\)
b) \(6x-10y=2\left(3x-5y\right)\)
c) \(2a+4b-6c=2\left(a+2b-3c\right)\)
d) \(6xy-12x-18y=6\left(xy-2x-3y\right)\)
e) \(2\left(x+y\right)-5a\left(x+y\right)=\left(2-5a\right)\left(x+y\right)\)
f) \(6x\left(x-y\right)+5\left(y-x\right)=6x\left(x-y\right)-5\left(x-y\right)=\left(6x-5\right)\left(x-y\right)\)
a, \(15x+15y=15\left(x+y\right)\)
b, \(6x-10y=2\left(3x-5y\right)\)
c, \(2a+4b-6c=2\left(a+2b-3c\right)\)
d, \(6xy-12x-18y=2\left(3xy-6x-9y\right)\)
e, \(2\left(x+y\right)-5a\left(x+y\right)=\left(x+y\right)\left(2-5a\right)\)
f, \(6x\left(x-y\right)+5\left(y-x\right)=6x\left(x-y\right)-5\left(x-y\right)=\left(x-y\right)\left(6x-5\right)\)
full nhé ^^
a) 15x + 15y = 15( x + y )
b) 6x - 10y = 2( 3x - 5y )
c) 2a + 4b - 6c = 2( a + 2b - 3c )
d) 6xy - 12x - 18y = 6( xy - 2x - 3y )
e) 2( x + y ) - 5a( x + y ) = ( 2 - 5a )( x + y )
f) 6x( x - y ) + 5( y - x ) = 6x( x - y ) - 5( x - y ) = ( 6x - 5 )( x - y )
c) 2x2(x +1) + 4x(x +1); d) 2 x(y - 1) - 2
