सूची – I को सूची & II से

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If (a + b) = 1 and (1/a) – 2b = 5/a then find the value of a² + b².

If √t + (1/√t) = 5, then find the value of t + (1/t).

Solve for x:-  5(x − 2)/3 = 3(x + 4)/2

when x =4 and y =-6 then find the value of 27x³ +58x²y +31xy² +8y³?

If √b + (1/√b) = 8, then find the value of b + (1/b).

(408 × 680)÷(20% of 680) = (250 × 260)÷ 10 + ? – 4500

If x : y : z = 6 : 7 : 11, and (2x + 3z) = 180, then find the value of y.

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If (x + y) = 35, then find the value of (x - 10)⁶ + (y - 25)⁶.