Question

Factorise : (x2 + y2 - 22)2 - 4x22
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Answer 1

Answer:

Given : x2+y2−z2−2xy

We can write it as 

x2+y2−z2−2xy =(x2+y2−2xy)−z2

So we get

x2+y2−z2−2xy =(x−y)2−z2

Based on the equation a2−b2=(a+b)(a−b)

We get ,

x2+y2−z2−2xy =(x−y+z)(x−y−z)

Step-by-step explanation:

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Answer 2

x^2+y^2+1974 <=Ⓐⓝⓢⓦⓔⓡ...