Math, asked by nk1191033, 5 months ago

19. Taking x=1/2, y= 2/3 and z= 4/5 verify that
X x (y+z) = x x y + xyz.

Answers

Answered by bigfansjyotibarbhi
0

Step-by-step explanation:

We have, L.H.S.=x

3

+y

3

+z

3

−3xyz

=(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

]

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