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Factorisation

Short Answer Type

11.

Find the common factors of the given term.

10 pq, 20qr, 30rp

191 Views

12.

Find the common factors of the given term.

3x²y³ , 10x³y², 6x²y²z

164 Views

13.

Factorise the following expression:

7x - 42

246 Views

14.

Factorise the following expression:

6p - 12q

204 Views

15.

Factorise the following expression:

7a²+ 14a

185 Views

16.

Factorise the following expression:

-16z + 20z³

153 Views

17.

Factorise the following expression:

20 l²m + 30 a l m

200 Views

18.

Factorise the following expression:

5x²y - 15xy²

176 Views

19.
Factorise the following expression:

10a²- 15b² + 20c²

∵                   10a² = 2 × 5 × a × a = (5) [2 × a × a]

                     15b² = 3 × 5 × b × b = (5) [3 × b × b]

                     20c² = 2 × 2 × 5 × c × c = (5)[2 × 2 × c × c]

∴ 10a² - 15b² + 20c²= (5)[2 × a × a + 3b × b + 2 × 2 × c × c]

                             = 5[2a²+ 3b²+ 4c²]