Leysa (-2i)(-7-i) | Microsoft stærðfræði leysa

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Raunhluti

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5 vandamál svipuð og:

Svipuð vandamál úr vefleit

https://socratic.org/questions/how-do-you-evaluate-32-15

https://socratic.org/questions/how-do-you-evaluate-7-2-9

https://socratic.org/questions/what-is-the-slope-of-the-line-passing-through-the-following-points-7-8-10-2

https://socratic.org/questions/what-is-the-unit-vector-that-is-orthogonal-to-the-plane-containing-29i-35j-17k-a

https://socratic.org/questions/what-is-the-slope-of-the-line-that-passes-through-the-pair-of-points-c-0-2-d-2-0

https://socratic.org/questions/what-is-the-slope-of-the-line-passing-through-the-following-points-2-7-1-1

Deila

Afritað á klemmuspjald

-2i\left(-7\right)-2\left(-1\right)i^{2}

Margfaldaðu -2i sinnum -7-i.

-2i\left(-7\right)-2\left(-1\right)\left(-1\right)

i^{2} er -1 samkvæmt skilgreiningu.

-2+14i

Margfaldaðu. Endurraðaðu liðunum.

Re(-2i\left(-7\right)-2\left(-1\right)i^{2})

Margfaldaðu -2i sinnum -7-i.

Re(-2i\left(-7\right)-2\left(-1\right)\left(-1\right))

i^{2} er -1 samkvæmt skilgreiningu.

Re(-2+14i)

Margfaldaðu í -2i\left(-7\right)-2\left(-1\right)\left(-1\right). Endurraðaðu liðunum.

-2

Raunhluti -2+14i er -2.

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