Question

verify that a*(b*c) = (a*b) a= -5 b= 3/2 c= -7/20
Please solve it fast​

Answer 1

Answer:

a×(b×c) = -5×(3/2× -7/20)

= -5×(-21/40)

= 21/8

NOW, (a×b)×c

= (-5×3/2)× -7/20

= -15/2× -7/20

= 105/40

= 21/8

so a×(b×c)= (a×b) ×c

HENCE PROVED.

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