3xy + 3y2 = 3y (x + y)
(x - 4y)(x + y)
A negative exponent means the reciprocal of the positive exponent → y^-8 = 1/(y^8) = 1/(y×y×y×y×y×y×y×y)
The reciprocal of a^(-x/y) is 1/a^(x/y). The fact that the exponent is a fraction makes no difference.
That equals 2xy + 3y which factors to y(2x + 3)
3xy + 3y2 = 3y (x + y)
1,3,x,y,3x,3y,xy,3xy
3xy
15x - 3xy = 3x(5 - y) 20 - 4y = 4(5 - y) 15x - 3xy + 20 - 4y = (3x + 4)(5 - y)
-3xy is a monomial where x and y are variables and -3 is the coefficient of the monomial.If we know the value of y, we have to substitute it for y, and we say that -3(y-value) is the coefficient of x.
It is x and y that are the unknown variables
M=3 because y+y+y= 3xY and MY= MxY
yes 3xy=6
3xy - 3xy = 0
3xy-2y=0 3xy=2y y=2y (3x) y/2y=3x 1/2=3x multiply across by 2 1=6x 1/6=x therefore substituting x=1/6 into 3xy-2y; 3(1/6)y-2y=0 1/2y=2y y=2y/0.5 0.5 aka 1/2 y=1
9xy(3xy - 4)
They cannot be combined, being unlike terms.