Q3 of 23 Page 1

Attempt any three of the following sub questions:

Solve the following quadratic equation by factorization method:


3x2 - 29x + 40 = 0.

3x2 - 29x + 40 = 0

⇒ 3x2 - 24x - 5x + 40 = 0


⇒ 3x(x - 8) - 5(x - 8) = 0


⇒ (3x - 5)(x - 8) = 0


⇒ x = 3/5 or x = 8.


More from this chapter

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2

Attempt any four of the following subquestions:

Find the value of k for which the given simultaneous equations have infinitely many solutions:


Kx + 4y = 10;


3x + 2y = 5.

 3

Attempt any three of the following sub questions:

How many three digit natural numbers are divisible by 5?

 3

Attempt any three of the following sub questions:

Solve the following simultaneous equations by using Cramer’s rule:


3x - y = 7;


x + 4y = 11.

 3

Attempt any three of the following sub questions:

Two dice are thrown, Find the probability of the event that then product of numbers on their upper faces is 12.