Question

Find the common factors of the terms

(i) 10pq, 20qr, 30rp

(ii) 3x²y³, 10x³y², 6x²y²z

Answer 1

(i) 10pq = 2 × 5 × p × q

20qr = 2 × 2 × 5 × q × r

30rp = 2 × 3 × 5 × r × p

The common factors are 2, 5.

And, 2 × 5 = 10

(ii) 3x²y³ = 3 × x × x × y × y × y 

10x³y² = 2 × 5 × x × x × x × y × y 

6x²y²z = 2 × 3 × x × x × y × y × z

x × x × y × y = x²y²