Question

1f a = 2, b = 3 and c = 1, find the value of : a2 + b2 + c2 - 2ab - 2bc - 2ca + 3abc.
of : p3 + q3.- p3 - 3pgr.​

Answer 1

Answer:

Substituting a=2, b=3 , c=−2 in the given expression, we get

a

2

+b

2

+c

2

−2ab−2bc−2ca+3abc

=(2)

2

+(3)

2

+(−2)

2

−2×2×3−2×3×−2−2×−2×2+3×2×3×−2

=4+9+4−12+12+8−36

=25−36=−11

Answer 2

Answer:

-11

Step-by-step explanation:

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