What is simplify-2i*(-2i) ?

The solution to simplify-2i*(-2i) is -4

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simplify-2i*(-2i)

simplify

- 2 i \cdot (- 2 i)

- 4

Solution steps

- 2 i (- 2 i)

Apply rule:

- a (- b) = ab

- 2 i (- 2 i) = 2 i 2 i

= 2 i 2 i

Multiply the numbers:

2 \cdot 2 = 4

= 4 ii

Apply exponent rule:

aa = a^{2}

ii = i^{2}

= 4 i^{2}

Apply imaginary number rule:

i^{2} = - 1

= 4 (- 1)

Multiply the numbers:

4 (- 1) = - 4

= - 4

2 \frac{1}{2} - 1 \frac{1}{3}

\frac{x - 1}{2} - \frac{x + 2}{6}

15 x^{2} - 7 x - 4

\frac{b ^{0.8}}{b ^{- 0.2}}

\frac{9}{4} \times 3