What is simplify-5i(-2-i) ?

The solution to simplify-5i(-2-i) is -5+10i

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simplify-5i(-2-i)

simplify

- 5 i (- 2 - i)

- 5 + 10 i

Solution steps

- 5 i (- 2 - i)

Apply the distributive law:

a (b - c) = ab - a c

- 5 i (- 2 - i) = - 5 i (- 2) - (- 5 i) i

= - 5 i (- 2) - (- 5 i) i

- 5 i (- 2) = 10 i

- (- 5 i) i = - 5

= 10 i - 5

Rewrite in standard complex form:

- 5 + 10 i

= - 5 + 10 i

- (2 a + 3 b - 4) + (a - 2 b + 5) - (4 a - 7 b - 6)

\frac{x ^{3} - 9 x}{x ^{2} + 10 x + 21} \cdot \frac{x ^{2} + 7 x}{x ^{2} + 5 x - 24}

(- 2 x + 2)^{2}

(2 x - 3) (x + 7)

(6 x^{2}) (- 3 x^{5})