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3 years ago

14

Which expression is equal to (x+2)(−3x2+3x+1)?

1 answer:

padilas [110]3 years ago

7 0

Multiply everything in the second parenthesis by x.

-3x^3 + 3x^2 + x

Multiply everything in the second parenthesis by 2.

-6x^2 + 6x + 2

Combine these two equations together.

-3x^3 + 3x^2 + x - 6x^2 + 6x + 2

Combine like terms.

-3x^3 - 3x^2 + 7x + 2

Hope this helps!
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2 years ago

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Virty [35]

Answer:

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Step-by-step explanation:

Use the values of the unit circle to get the (x,y) when Θ= $\frac{11\pi}{6}$ , which is $(\frac{\sqrt{3}}{2}, -\frac{1}{2})$ .

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3 years ago

Identify the quotient in the form a + bi. HELP PLEASE!!

Flauer [41]

Answer:

OPTION C

Step-by-step explanation:

To find the quotient of $\frac{5 - 8i}{3 + 2i}$

Multiplying and dividing by conjugate we get:

$\frac{5 - 8i}{3 + 2i} \times \frac{3 - 2i}{3 - 2i}$

$= \frac{(5 - 8i)(3 - 2i)}{9 + 4}$

[Since, $(a + ib)(a - ib) = a^2 + b^2$ ]

$= \frac{15 -10i -24i -16}{13}$

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Therefore, OPTION C is the answer.

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Answer:

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Step-by-step explanation:

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2 years ago