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Solve for y if the equation is -2x - 2y equals -12?
-2x - 2y = -122x + 2y = 122y = 12 - 2xy = 6 - x
What is the solution to x squared equals x plus 6?
X squared = x+6 6+x=x squared X=6
Is x equals 3 a solution of x-7 equals 4?
no.. x equals 11
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
If Y' equals 2xy plus x to power 3 what is y equal to?
Assuming y' is dy/dx, y = x^4/4 + yx^2
2xy x equals 5 y equals 3?
2xy substitute 3 for y and 5 for x 2(5)(3) = 30
Evaluate 2xy when x equals 30 and y equals 2?
2xy=2*30*2=120
Simplify 15xy-2xy-7x plus x equals?
15xy-2xy-7x+x=13xy-6x
How do you solve 2xy plus 6 equals 4xyz for y?
2xy + 6 = 4xyz Divide through by 2: xy + 3 = 2xyz 3 = 2xyz - xy = y*(2xz - x) Therefore, y = 3/(2xz - x) provided that 2xz - x is not zero.
What is the solution of 2y-x equals 6 y equals x plus 6?
(x, y) = (-6, 0)
Is x equals 6 a solution to -2 x -4 equals 8?
No, it is not.
Solve for y if the equation is -2x - 2y equals -12?
-2x - 2y = -122x + 2y = 122y = 12 - 2xy = 6 - x
What is the solution set for this quadratic equation 7x2 plus x equals 6?
The solution: x = 6/7 and x = -1
Is x equals 6 a solution to-2x-4 equals -8?
No because x = 2
How do you rearrange formulae?
you treat the letters like numbers i.e if x=4y, rearrange for y solution: divide both sides by 4 therefore y=1/4 x example 2: 6z+x/y = 2x-y rearrange for z solution: multiply both sides by y: 6z+x = y(2x-y) 6z+x = 2xy-y2 Take away x from both sides: 6z = 2xy-y2-x divide both sides by 6: z= 1/6(2xy-y2-x) done!
What is the solution set of x - 6 equals 8?
x=14
When x-y equals 7 and xy equals 8 find the value of x square plus y square?
x2 + y2 = x2 - 2xy + y2 + 2xy = (x - y)2 + 2xy = 72 + 2*8 = 49 + 16 = 65 You could, instead, solve the two equations for x and y and substitute, but the above method is simpler.
