Question

1. If a = -71, b=4 and C=-5, verify a x (b x c) = (a x b) xc​

Answer 1

Given data :

• a = - 71, b = 4 and c = - 5

To verify : a × (b × c) = (a × b) × c

Step-by-step explanation :

• First we find the values of each side for the given values of a, b and c.

Now, a × (b × c)

= - 71 × {4 × (- 5)}

= - 71 × (- 20)

= 1420

and (a × b) × c

= (- 71 × 4) × (- 5)

= (- 284) × (- 5)

= 1420

We see that, left hand side = right hand side, for the given values of a, b and c.

Thus verified: a × (b × c) = (a × b) × c