How to solve ( ) - |21| + |21|

1. Factor the equation (x + 2)(x + 3) = 0. 2. Set each factor equal to zero: x + 2 = 0 and x + 3 = 0. 3. Solve for x: x = -2 and x = -3.

Solve ( ) - |21| + |21| | Equatix

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$$( i i ) = | 21 | + | 21 |$$

$\text{false}$

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

$$-1=|21|+|21|$$

The modulus of a complex number $a+bi$ is $\sqrt{a^{2}+b^{2}}$. The modulus of $21$ is $21$.

$$-1=21+|21|$$

The modulus of a complex number $a+bi$ is $\sqrt{a^{2}+b^{2}}$. The modulus of $21$ is $21$.

$$-1=21+21$$

Add $21$ and $21$ to get $42$.

$$-1=42$$

Compare $-1$ and $42$.

$$\text{false}$$