Question

3x2 − y3 − y3 − z if x = 3, y = −2, and z = −5

Answer 1

Hey mate, here is your answer -:)

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$= {3x}^{2} - {y}^{3} - {y}^{3} - z \\ =3 {x}^{2} - 2 {y}^{3} - z \\ \\ on \: putting \: x = 3 \: y = - 2 \: and \: z = - 5 \\ = 3(3) {}^{2} - 2( - 2) {}^{3} - ( - 5) \\ = 3(9) - 2( - 8) - ( - 5) \\ = 27 + 16 + 5\\ = 48$

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HOPE it helps to you!!!

Answer 2

x=3 y=-2 z=-5

3x^2 -y^3 - y^3 -z

3x^2 -2y^3 -z

substitute x,y,z values

3(3)^2 -2(-2)^3 -(-5)

3(9) -2(-8) +5

27 + 16 + 5

48