Question

answer 1st question ​

Answer 1

Answer:

I was just thinking. it may be correct

Answer 2

➸ Question : -

Add the following :

1) p ( p - q ) , q ( q - r ) and r ( r - p )

2) 2x ( z- x - y ) and 2y ( z - y - x)

➸ Answer :-

1) p ( p - q ) + q ( q - r ) + r ( r - p )

=> p^2 - pq + q^2 - rq + r^2 -rp

[ First we have to multiply and then add the terms together, If we don't have any common term then that's the simplified answer ] .

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2 ) 2x ( z- x - y ) + 2y ( z - y - x)

=( 2xz - 2x^2 - 2xy) + ( 2yz -2y^2 - 2xy)

= > -2x^2 - 2y^2 - 4xy + 2yz + 2xz

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