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2x+3y3x+2y=56 হলে কোনটি xঃy ?
If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is
IF x+y=9 and x-y = 5 the value of 4xy is:
If x4 + x2 y2 + y4 = 21 and x2 + xy + y2 = 3, then what is the value of 4xy?
If 9x 3y = 2187 and 23x 22y – 4xy = 0, then what can be the value of (x + y)? 
The question below consists of a question followed by two statements labeled as 1 and 2. You have to decide whether these statements are sufficient to answer the question. Question: What is the value of X+Y ? Statements: 1. X - 2Y = 5 2. X2 – 25 = 4XY - 4Y2
If x = 1 + $$\sqrt 2 $$  + $$\sqrt 3 $$  and y = 1 + $$\sqrt 2 $$  - $$\sqrt 3 {\text{,}}$$  then the value of $$\frac{{{x^2} + 4xy + {y^2}}}{{x + y}}$$   is?
If (5x – y)/(5x + y) = 3/7, then what is the value of (4x2 + y2 – 4xy)/(9x2 + 16y2 + 24xy)?
If x + 1/y = 2, then what is the value of {(x2y + 4xy + x)(2 – x)}/(2xy – x2y)?
Discuss maximum or minimum value of f(x,y) = y2 + 4xy + 3x2 + x3.