Calculate: -4*x*1+2 ^ 2 = 4

Expression: $$- 4 \cdot x \cdot 1 + 2 ^ { 2 } = 4$$

Multiply $-4$ and $1$ to get $-4$.

$$-4x+2^{2}=4$$

Calculate $2$ to the power of $2$ and get $4$.

$$-4x+4=4$$

Subtract $4$ from both sides.

$$-4x=4-4$$

Subtract $4$ from $4$ to get $0$.

$$-4x=0$$

Product of two numbers is equal to $0$ if at least one of them is $0$. Since $-4$ is not equal to $0$, $x$ must be equal to $0$.

$$x=0$$