It is (x + y)^3 - sqrt(5x + 3y) and there is no sensible simplification of this expression.
The word sum is the clue. It means the problem will be an addition problem.y + 3(8) = ?y + 24 = ?
2(x+y) is twice the sum of x and y, and 2x+y is the sum of twice x and y
y is 2 less than the product of 3 and x
In an addition sum, if the missing number is the first number, for example, x + 5 = 10, then to find x, perform the sum 10 - 5, producing the solution x = 5. In a subtraction sum, if the missing number is the second number, for example, 7 - y = 4, then to find y, perform the sum 7 - 4 = 3, production the solution y = 3.
3(y+7)
(x+y)+3
y, y+2, y+4
5
It is (x + y)^3 - sqrt(5x + 3y) and there is no sensible simplification of this expression.
Twice the sum of 'x' and 'y' . . . 2(x+y) The sum of twice 'x' and 'y' . . . (2x+y)
The word sum is the clue. It means the problem will be an addition problem.y + 3(8) = ?y + 24 = ?
3x over x + y
Suppose the numbers are x and y. The sum of their reciprocals = 1/x + 1/y = y/xy + x/xy = (y+x)/xy = (x+y)/xy = 10/30 = 1/3
2(x+y) is twice the sum of x and y, and 2x+y is the sum of twice x and y
y is 2 less than the product of 3 and x
y = 6 - 4 = 2, thus 3y = 3 x 2 = 6