The sum of the real numbers x and y is 11. Their difference is 5. what is the value of xy? Y=3
Answer:
Step-by-step explanation:
An expression only has variables, operational signs, and maybe a number or two. An equation has an equal sign. An inequality has either greater than, less than, greater than or equal to, or less than or equal to.
Answer:
x^2+6x+9
Step-by-step explanation:
expand the expression
It would be 121 hejsjskbshekanzbsjaka
x + y= 9 and x - y= 3
rearrange the second equation:
x - y= 3
x = 3 + y
x -3 = y
substitute y with "x-3" in the first equation and solve
x + y= 9
x + (x-3)= 9
2x -3 = 9
2x = 12
x = 6
you could also start with the first equation and substitute y in the second.
graphically speaking, it's the intersection point of to lines, at least the six-part of the point.
