该计算器将求出给定函数或表达式的值,必要时会代入给定变量的数值。
Enter an expression:
If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please contact us.
Your input: evaluate $$$- z + 2 \left(x + 7\right) + \left(y - 1\right)^{2}$$$ when $$$x=1$$$, $$$y=2$$$, $$$z=5$$$.
Answer: $$$12$$$.