If 2cos2 Ɵ – 5cos Ɵ + 2 =

If a³ = 117 + b³ and a = 3 + b, then the value of a + b is:

Find x, given 5 (√5)^x+6 = (√5)^2x+7 :

The value of the expression (1 + sec22° + cot68°)(1 – cosec22° + tan68°) is

If 0 ≤ θ ≤ 90°, and sec¹⁰⁷ θ + cos¹⁰⁷ θ = 2, then. (secθ + cosθ) is equal to:

If x sin³ θ + y cos³ θ = sin θ cos θ and x sin θ − y cos θ = 0, then the value of x² + y² equals

If x + y + z = 0, then what is the value of (3y² + x² + z²)/(2y² – xz)?

There are 6 blue pens, 5 black pens and 4 green pens in a bag. Three pens are chosen randomly.

If 8x² + y² − 12x − 4xy + 9 = 0, then the value of (14x − 5y) is :

If (a + b)/c = 6/5 and (b + c)/a = 9/2, then what is the value of (a + c)/b?

The value of = 3/4 ÷ 3/4  of 4/3 + 5/2 ÷ 2/5 of 5/4 – (2/3 + 2/3 of 5/6) is :