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Prove '2xy is less than equal to x square plus y square'?
(x-y)2 is a square so (x-y)2 >= 0 expanding, x2 - 2xy + y2 >= 0 so x2 + y2 >= 2xy or 2xy <= x2 + y2
What is x squared plus 2xy plus y squared?
(x+y)2
X plus y plus z squared?
If th equestion meant: (x+y+z)^2The expansion is:(x+y+z)^2= x^2+2xy+y^2+2yz+z^2+2zx
X plus y squared?
(x+y)2 = x2 + 2xy + y2
What does 2x plus 2y equals?
(2x + 2y) is exactly the same thing as 2(x+y). In order to know how much it actually is, you have to know the numerical values of both 'x' and 'y'.
Simplify 15xy-2xy-7x plus x equals?
15xy-2xy-7x+x=13xy-6x
What is 4x to the second power plus 2xy to the second power z plus 2xyz?
It is not possible to give an answer. Limitations of the browser used by Answers.com means that we cannot see most symbols. There is no mathematical operator between "2xy to the power 2" and "z". Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc.
What 2xy-3y plus 1 equals 0?
It's an hyperbola equation.
Why is x plus y squared equal to x to the power of 3 plus y to the power of 3?
That would be very hard to answer, because it's not. (x + y)2 = x2 + y2 + 2xy
2cy plus 2xy equals 15 solve for y?
Y=15/(2c+2x)
Why cant 2x plus y equals 2xy?
Because 2x+y is addition not multiplication
What is 2xy plus 6xy?
2xy + 6xy = 8xy
Whats the factor from of 2xy-4x plus 8y-16?
2xy - 4x plus 8y - 16 equals x plus 4 in parentheses multiplied by 2y minus 4 in parentheses. So, the factors are ( x + 4) and ( 2y - 4) .
Evaluate 2xy when x equals 30 and y equals 2?
2xy=2*30*2=120
Prove '2xy is less than equal to x square plus y square'?
(x-y)2 is a square so (x-y)2 >= 0 expanding, x2 - 2xy + y2 >= 0 so x2 + y2 >= 2xy or 2xy <= x2 + y2
Prove '2xy is less than equal to x2 plus y2'?
(x - y)2 >= 0 since the left hand side is a square. ie x2 - 2xy + y2 >= 0 so x2 + y2 >= 2xy
What is the answer to this math question 3xy-xy-2y plus 5y?
That equals 2xy + 3y which factors to y(2x + 3)
