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-3² = -1*3² = -1 * 9 = -9 (order of operations) while (-3)² = (-3)(-3) = +9 or 9

Evaluate: Z2 – X2 -XY if X = -2, Y = 3, and Z = -4 (please see section 1.8 for further review)

Respuesta :

Answer:

For the given values [tex]Z^2  - X^2 - XY  = 18[/tex]

Step-by-step explanation:

Here, the given values are:

X = -2, Y = 3 and Z = -4

To find the value of the expression:[tex]Z^2  - X^2 - XY[/tex]

Now, substitute the given values in the expression, we get

[tex]Z^2  - X^2 - XY  = (-4)^2  - (-2)^2  - (-2)(3)\\=16 - 4 + 6\\=12 + 6 = 18[/tex]

or, [tex]Z^2  - X^2 - XY  = 18[/tex]

Hence, for the given values the simplified value is 18.

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