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Popular >

simplify (4i)(-i)

Solution

simplify

(4 i) (- i)

Solution

4

Solution steps

(4 i) (- i)

Apply rule:

a (- b) = - ab

(4 i) (- i) = - 4 ii

= - 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

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x^{2} - 12 x + 27

factor x^4+2x^3-4x^2-8x factor

x^{4} + 2 x^{3} - 4 x^{2} - 8 x

Frequently Asked Questions (FAQ)

What is (4i)(-i) ?
The solution to (4i)(-i) is 4