Question

Factorise:
1. x²-3²
2. k²-1
3. 2a²-18
4. 16y²-100k²
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Answer 1

Answer:

what is your question ........

Answer 2

Answer:

x^2-3^2

using identity a^2-b^2= (a+b)(a-b)

(x+3)(x-3)

2) k^2-1

k^2-1^2

using identity a^2-b^2= (a+b)(a-b)

(k+1)(k-1)

3) 2a^2-18

2(a^2-9)

2(( a)^2-3^2)

2 ( (a+3)(a-3))

4) 16y^2-100k^2

using identity a^2-b^2= (a+b)(a-b)

(16y+100k)(16y-100k)