Question

verify that a×(b×c)=(a×b)×c, if a= -5/7 b= 13/15,c=-1/14​

Answer 1

Answer:

Given:a= -5/7 b= 13/15,c=-1/14

To verify:a×(b×c)=(a×b)×c

=>-5/7x(13/15 x-1/14)=(-5/7x13/15)x-1/14

=>-5/7x -13/210=(-13/21)x-1/14

=>13/294=13/294

Lhs=rhs

Hence verified

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Answer 2

LHS :-

a×(b×c)=-5/7 ×(13/15×-1/14)=-5/7×-13/210=

13/7×42=13/294

RHS:-

(a×b)×c=(-5/7×13/15)×-1/14=-13/21×-1/14

=13/294

LHS=RHS