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Factorisation

Question

Wired Faculty App

Factorise the following expression:

7x - 42

Solution

∵ 7x = 7 × x = (7) × x
42 = 2 × 7 × 3 = (7) × 2 × 3

∴ 7x - 42 = 7[(x) - (2 × 3)]
= 7[x - 6]

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Some More Questions From Factorisation Chapter

Find the common factors of the given term.

10 pq, 20qr, 30rp

Find the common factors of the given term.

3x²y³ , 10x³y², 6x²y²z

Factorise the following expression:

7x - 42

Factorise the following expression:

6p - 12q

Factorise the following expression:

7a²+ 14a

Factorise the following expression:

-16z + 20z³

Factorise the following expression:

20 l²m + 30 a l m

Factorise the following expression:

5x²y - 15xy²

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