SOLUTION: 6z + 1 + 4x^2 - 3y^3 + 7x - 8y^2 + 2x^2 - x + 5z � 17 and evaluate it for x = -2, y = -3, z = -5 identify variables, constants and coefficients

Question 560224: 6z + 1 + 4x^2 - 3y^3 + 7x - 8y^2 + 2x^2 - x + 5z � 17 and evaluate it for x = -2, y = -3, z = -5 identify variables, constants and coefficients
Found 2 solutions by Maths68, richard1234:
Answer by Maths68(1474) (Show Source): You can put this solution on YOUR website!
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Combine like terms
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Variables are x,y,z
constant is -16
Coefficients are 6,-3, -8, 6, and 11

Evaluate
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Put x= -2, y=-3 and z=-5
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Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Just replace x = -2, y = -3, and z = -5 into the expression and simplify, i.e.

6(-5) + 1 + 4(-2)^2 - 3(-3)^3 + 7(-2) - 8(-3)^2 + 2(-2)^2 - (-2) + 5(-5) � 17

Be careful using the order of operations, and note that a negative number times a negative number equals a positive number. You should get -50 as your answer.
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Identifying variables, constants, and coefficients is quite straightforward. A variable is simply a symbol or letter that represents a number (x,y,z in this case). A constant is a fixed number (-17 in this case), and a coefficient is a constant that is multiplied with a variable.
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