Question

when x=1,y=-2 and z=-3 then find:x3+2x2yz-2xy2z+2xyz2-z2 ​

Answer 1

Answer:

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Step-by-step explanation:

→ x = 1 , y = -2 , z = -3

→ x3 + 2x2yz - 2xy2z - z2

→ (1)3 + 2(1)2(-2)(-3) - 2(1)(-2)2(-3) + 2(1)(-2)(-3)2 - (-3)(2)

→ 2(-4)(-3) - (-2)(-6) + 12(2) - (-6)

→ 24 - 12 + 24 + 6

→ 42