Question

Factorise: x(a-5) +2(5-a)

OR

(p-q)3+(q-r)3+(r-p)3​

Answer 1

Answer:

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Step-by-step explanation:

Hi ,

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If x + y + z = 0 ,

Then ,

x³ + y³ + z³ = 3xyz

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Here ,

Let x = p - q ,

y = q - r ,

z = r - p ;

Now ,

x + y + z = p - q + q - r + r - p

x + y + z = 0

Therefore ,

x³ + y³ + z³ = 3xyz

( p - q )³ + ( q - r )³ + ( r - p )³

= 3( p - q )( q - r )( r - p )

I hope this helps you.

Answer 2

Answer:

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