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Evaluate x2 + yz for x = 5, y = -3 and z = 2. Show each step of your work.

and if you can, simplify 2(x + 4) + 7(x – 5) + 3. Show each step of your work.

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Astute

Hello there!

Question #1: Evaluate x2 + yz for x = 5, y = -3 and z = 2. Show each step of your work.

[tex] (5*2)+(-3*2) \\ - \downarrow----\downarrow-\\ \ \ (10)---(-6) \\ 10+-6=\bf4 [/tex]

Answer: 4

Question #2: and if you can, simplify 2(x + 4) + 7(x – 5) + 3. Show each step of your work.

[tex] ((2 * (x + 4)) + 7 * (x - 5)) + 3 \\ \\ (do \ wants \ in \ parenthesis, \ first) \\ \\ Pull \ out \ like \ factors :

9x - 24 = 3 * (3x - 8) \\ \\ Answer: 3 * (3x - 8)

[/tex]


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