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More Algebra Questions
- If (6x + y) = 180 and 5x:2y = 25:12, then find the value of (2x² + 5y²).
- (x + 4) 2 + (y – 1) 2 + (z + 2) 2 = 0, then find the value of 2x - 3y + z.
- If √x + (1/√x) = 13, then find the value of x + (1/x).
- If a + b + c = 12 and ab + bc + ca = 50, then find the value of a2 + b2 + c2.
- If (x - y) = 3, then find the value of (x³ - y³ - 9xy).
- If (r + s + t) = 12 and (rs + st + tr) = 60, then find the value of (r² + s² + t²).
- If x = (2+√3)/(2-√3), y = (2-√3)/(2+√3). Then find out the value of (x²+y²-xy)/(x²+y²+xy)?
- Question 8
- If (a + b) = 10 and ab = 21, find the value of (a² + b²).
- If 112 ÷28 x 22 –12 x 6 ÷ 3 +12 = z, then find the value of z.
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