Add : 18pq – 15pq and 3pq - Mathematics

Add : 18pq – 15pq and 3pq

Sum

18pq – 15pq and 3pq

= 18pq + 3pq - 15pq = 21pq - 15pq = 6 pq

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Chapter 11: Fundamental Concepts (Including Fundamental Operations) - Exercise 11 (B)

Chapter 11 Fundamental Concepts (Including Fundamental Operations)
Exercise 11 (B) | Q 2.3

Identify the term, their coefficients for the following expression:

7x²yz − 5xy

Group the like term together: ab, – a²b, – 3ab, 5a²b and – 8a²b

Write numerical co-efficient of the following: – 9a²b³

Add : 2x + y and 3x – 4y

Find the sum of: a² + b² + 2ab, 2b² + c² + 2bc and 4c² -a² + 2ac

Simplify:

`a(a + 1/a) - b(b - 1/b) - c(c + 1/c)`

Simplify: 9x + 5 – [4x – {3x – 2 (4x – 3)}]

Factorisation of – 3a² + 3ab + 3ac is 3a(– a – b – c).

Factorise the following expression.

6ab + 12bc

If (x²y + y² + 3) is subtracted from (3x²y + 2y² + 5), then coefficient of y in the result is ______.