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Q:

If x - y = 6 and xy = 40, then find x2 + y2 ?

A) 116 B) 80
C) 89 D) 146
 
Answer & Explanation Answer: A) 116

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Q:

If xy = -18 and x2+ y2= 85, then find the value of (x + y).

A) 8 B) 10
C) 9 D) 7
 
Answer & Explanation Answer: D) 7

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Q:

What will be the roots of the quadratic equation x2 - 25x + 156 = 0?

A) 12, 13 B) 25, 1
C) 9, 16 D) 31, 6
 
Answer & Explanation Answer: A) 12, 13

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Q:

If cosθ1-sinθ+cosθ1+sinθ = 4, then the value of θ (0°<θ<90°)?

A) 60° B) 45°
C) 30° D) 35°
 
Answer & Explanation Answer: A) 60°

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Q:

If 9x2 + 16y2 = 60 and 3x + 4y = 6, then the value of xy is

A) -1 B) 1
C) -2 D) 2
 
Answer & Explanation Answer: A) -1

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Q:

If x = √2+1, then the value of x4-1/x4

A) 8√2 B) 18√2
C) 6√2 D) 24√2
 
Answer & Explanation Answer: D) 24√2

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Q:

The Simplified form of (b3x2a4z3)*(b4x3a3z2)/(a2b4z3) is

A) b2x4a6z B) b3x2a4z3
C) b3x5a5z2 D) bazx
 
Answer & Explanation Answer: C) b3x5a5z2

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Q:

On dividing 24a2b2 by 6b2, we will get

A) 4b B) 4ab
C) 4 D) 4a2
 
Answer & Explanation Answer: D) 4a2

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