Answer:
446
Step-by-step explanation:
x = 2
y = 5
z = 8
4x = 4*2 = 8
-2y = -2*5 = -10
7z^2 = 7 * 8^2 = 7 * 64 = 448
8 - 10 + 448 = 446
Answer:
[tex]446[/tex]
Step-by-step explanation:
[tex]4x - 2y + 7z^{2}[/tex]
[tex]x = 2[/tex]
[tex]y = 5[/tex]
[tex]z = 8[/tex]
[tex]4\left(2\right)-2\left(5\right)+7\left(8\right)^2[/tex]
Multiply 4 and 2 to get 8
[tex]8-2\times 4+7\times8^{2}[/tex]
Multiply 2 and 5 to get 10:-
[tex]8-10+7\times8^{2}[/tex]
Subtract 10 from 8 to get -2, and then calculate 8 to the power of 2 and get 64:-
[tex]-2+7\times 64[/tex]
Multiply 7 and 64 get 488:
[tex]-2+448[/tex]
Add -2 and 488 to get 446
[tex]446[/tex]
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