Question

4) Calcule o valor da expressão numérica:
-2² + (2) - 2
- 2 + (-3)² + 4°​

Answer 1

$-2^2+\left(2\right)-2-2+\left(-3\right)^2+4\\ 2^2\\ 2^2=4\\ =4\\ =-4+\left(2\right)-2-2+\left(-3\right)^2+4$

$\left(-3\right)^2\\ \left(-3\right)^2=3^2=9\\ =9$

$=-4+\left(2\right)-2-2+9+4\\ -4+\left(2\right)=-2\\ =-2-2-2+9+4\\ -2-2=-4\\ =-4-2+9+4\\ -4-2=-6\\ =-6+9+4\\=3+4\\ 3+4=7\\ =7$