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- If x = (√13 + √12)/ (√13 - √12) and y = (√13 - √12)/(√13 + √12), then find the value of 4x2 – xy + 4y2.
- if a2 + b2 + c2 = 2(3a -5b -6c)-70 , then a-b-c = ?
- ‘a’ is directly proportional to ‘b’. If at a=30, the value of ‘b’ is 20% greater than ‘a’, then find the value of ‘a’ when b=54.
- If 0.125x3 +0.216y3 = 210 and 0.25x2 + 0.36y2 = 10.30 then find the value of 0.5x + 0.6y.
- If x ,y,z are three integers such that x +y = 8,y +z =13 and z +x =17,then the value of x2 /yz is:
- If x and y are positive integers such that x + y = 13 and xy = 40, what is the value of x² + y²?
- If x + y = 12 and x² + y² = 74, find xy.
- (m + 2) 2 + (n - 1) 2 + (p + 6) 2 = 0, then find the value of 2m - 3n + p.
- Question 9
- If, 6x + y = 20, and 2xy = 32, and 6x > y, then find the value of 216x³ – y³.
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