What is : 5xy- x2t + 2xy + 3x2t
1xy
2xy + 6xy = 8xy
( 2xy - 4x ) + ( 8y - 16)2 ( xy - 2x ) + 2 ( 4y - 8 ) Answer
2x+5y-7x+2xy combine like terms 5y-5x+2xy that's simplified because there are only 3 terms (x, y, and xy) you cannot combine x and y unless it's being multiplied
What is : 5xy- x2t + 2xy + 3x2t
1xy
2xy + 6xy = 8xy
The three terms are: -3xy2, 2xy and -4y3
15xy-2xy-7x+x=13xy-6x
xy + xy = 2xy
(2xy-4x)+ (8y-16)=2xy-4x+8y-16, which factors as 2(x+4)(y-2)
-1
(x+y)2
( 2xy - 4x ) + ( 8y - 16)2 ( xy - 2x ) + 2 ( 4y - 8 ) Answer
They are four terms of an algebraic expression that can't be simplified
(x-y)2 is a square so (x-y)2 >= 0 expanding, x2 - 2xy + y2 >= 0 so x2 + y2 >= 2xy or 2xy <= x2 + y2