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Quadratic Equation Questions and Answers

2 years ago 4.0K Views
Q :  

If α and β are the roots of the equation x2 + x - 1 = 0, then what is the equation whose roots are and α5 and β

(A)

(B)

(C)

(D)

Correct Answer : B

Q :  

If one root of the equation is two and a half times the others, then which of the following is True?

(A)

(B)

(C)

(D)

Correct Answer : D

Q :  

Factor of  is__

(A) (4y+3)

(B) (3y-4)

(C) (4y-3)

(D) (3y+2)

Correct Answer : C

Q :  

and is a quadratic equation with roots.

(A)

(B)

(C)

(D)

Correct Answer : A

Q :  

If x1 and x2 are the roots of the equations bx2-ax + log2my=0 such that x12=a2+x22 then evaluate the roots in terms of a and b.

(A)

(B)

(C)

(D)

Correct Answer : A

Q :  

4 men can complete a piece of work in 2 days. 4 women can complete the same piece of work in 4 days whereas 5 children can complete the same piece of work in 4 days. If 2 men, 4 women, and 10 children work together, in how many days can the work be completed?

(A) 1 day

(B) 3 days

(C) 2 days

(D) 4 days

Correct Answer : A

Q :  

If a : 5 = b : 7 = c : 8, then (a + b + c)/a is equal to

(A) 2

(B) 4

(C) 7

(D) 1/4

Correct Answer : B

Q :  

(Smallest common multiple of 36 and 60) ÷ (Biggest common factor of 18 and 45) is equal to?

(A) 40

(B) 10

(C) 20

(D) 30

Correct Answer : C

Q :  

Express 15625 as a power of 5?

(A)

(B)

(C)

(D)

Correct Answer : B

Q :  

In equation the first root is x=2 then find out  the second root of equation.

(A) x=-22

(B) x=12

(C) x=22

(D) x=-12

Correct Answer : C

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