Question

multiply and verify the result when x=2,y=-1,z=-2(10-11): -2x2y(y2z2-x2z+xy3)

Answer 1

Answer:

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Answer 2

Answer:

• x=2
• y= -1
• z= -2 ( 10-11 ) = -2×( -1) = 2

Put value of x, y and z in equation

• -2x2y ( y×2×z×2 - x×2×z + x×y×3 )
• -2 × 2 × 2 × -1 [ (-1 × 2× 2× 2) - ( 2× 2× 2 ) + ( 2× -1× 3 ) ]
• 8 [ -8 - 8 - 6 ]
• 8 × - 22
• - 176

Answer is - 176