Question

Simplify and verify (7x2y-3z2)(x+y+z) x= 1,y=1,z= -1

Plz give answer step by step with how to solved LHS and RHS

Answer 1

Answer:

Given:

x=1. y=1. z=-1

(7x2y-3z2)(x+y+z)

Substitute value

(7×1×1-3×1)(1+1-1)=(7-3)(1)

=4

Step-by-step explanation:

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Answer 2

Answer:

20

Step-by-step explanation:

(7x2y-3z2)(x+y+z) where x=1, y=1, z=-1

=(7×1×2×1-3×(-1)×2)(1+1+(-1))

=(14+6)(1)

=(20)(1)

=(20)