Question

Verify that x + y*+ z 3xyz = 5(x + y + 2) [(x – y) + (- 3) + - 1)] +43-5 13.
please solve this question fast ​

Answer 1

Step-by-step explanation:

=(x+y+z)(x

2

+y

2

+z

2

−xy−yz−zx) [by poynomial identity]

=

2

1

(x+y+z)(2x

2

+2y

2

+2z

2

−2xy−2yz−2zx)

=

2

1

[(x+y+z)(x−y)

2

+(y−z)

2

+(z−x)

2

]

Hence proved.