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We have a 2 + 8a + 16 = (a) 2 + 2(a)(4) + (4) 2 = (a+4) 2 = (a + 4)(a + 4) ∴ a 2 + 8a + 16 = (a + 4) 2 = (a + 4)(a + 4)

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Factorisation

Short Answer Type

31.

Factorise:

5xy + 10x

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32.

Factorise:
12a²b + 15ab²

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33.

Factorise 10x²- 18x³+ 14x⁴

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34.

Factorise:

2xy + 2y + 3x + 3.

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35.

Factorise:

6xy - 4y + 6 - 9x

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36.
Factorise the following expression:

a²+ 8a + 16

We have
             a²+ 8a + 16 = (a)² + 2(a)(4) + (4)²
= (a+4)² = (a + 4)(a + 4)
∴           a²+ 8a + 16 = (a + 4)²= (a + 4)(a + 4)

287 Views

37.

Factorise the following expression:

P²- 10p + 25

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38.

Factorise the following expression:

25m² + 30 m + 9

471 Views

39.

Factorise the following expression:

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