Mathematics: Multiply (2 - + 41)? 26 + 151 -2 - 281 26 + i -30 + 151

Multiply (2 - + 41)? 26 + 151 -2 - 281 26 + i - id24126151228126304119193, nisha87

jazzy2742

12.01.2022

For this case we must simplify the following expression:

(2-7i) (- 1 + 4i)

Applying distributive property we have:

(2) (- 1) + (2) (4i) + (- 7i) (- 1) + (- 7i) (4i) =

We have to:

$+ * - = -\\- * - = +$

So:

-2 + 8i + 7i-28i ^ 2 =

We add similar terms:

-2 + 15i-28i ^ 2 =

By definition we have: i ^ 2 = -1

$-2 + 15i-28 (-1) =\\-2 + 15i + 28 =$

Different signs are subtracted and the sign of the major is placed:

26 + 15i

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Jaydenbaysinger122

04.01.2021

"The product of a number and 8"=8n

8n is the expression, evaluated when n=4 is:

8(4)=32

Step-by-step explanation:

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