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2 years ago

(-3+7i)(1-2i) can you help me with the answer to this

Mathematics

1 answer:

lozanna [386]2 years ago

4 0

Answer:

11 + 13i

Step-by-step explanation:

A must know is that

$\sqrt{i} = - 1$

Complex numbers

1st: foil the equations

$- 3(1 - 2i) + 7i(1 - 2i)$

$- 3 + 6i + 7i- 14 {i}^{2}$

2nd Combine like terms and substitute

$i ^{2} for \: - 1$

$- 3 + 14 + 13i$

$11 + 13i$

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ASHA 777 [7]

Answer:

$\large\boxed{(2x+3)(4x^2-6x+9)}$

Step-by-step explanation:

$8=2^3\\\\8x^3=2^3x^3=(2x)^3\\\\27=3^3\\\\8x^3+27=(2x)^3+3^3\qquad\text{use}\ a^3+b^3=(a+b)(a^2-ab+b^2)\\\\=(2x+3)\bigg((2x)^2-(2x)(3)+3^2\bigg)=(2x+3)(4x^2-6x+9)$

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PolarNik [594]

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4 years ago

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miv72 [106K]

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3 years ago

Given point P (3, 4). What is the distance of point P from (a) x axis (b) y axis?

vova2212 [387]

Answer:

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Step-by-step explanation:

The point P is(3,4)

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Because we use the axes as our reference point when plotting points,

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3 years ago

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slava [35]

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