3x+y=-1 y=-1-3x
5x-y=9 5x-(-1-3x)=9
5x+1+3x=9
8x=8
x=1
y=-1-3(1)
y=-4
(1,-4)
5xy+4=9
No.No.No.No.
x2 + 5xy - 18y2 can not be factored.
What is : 5xy- x2t + 2xy + 3x2t
1xy
1xy
It is 5xy + 5x.
The GCF is 5xy.
All six of them
In the given expression you replace x by 2 and y by 1. Thus 5xy + 7x2 - 12y = 5*x*y + 7*x2 - 12*y = 5*2*1 + 7*22 - 12*1 = 10 + 28 - 12 = 26
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "times", "equals", "squared". In this question there is no symbol before 5xy.
5xy (2x - 3y + 4 )