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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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30 points and brainly if answered correctly

BartSMP [9]

Answer:

21

Step-by-step explanation:

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2 years ago

Which of the following square root of -80

Marta_Voda [28]

You can factor -80 as

$-80 = (-1)\cdot 16 \cdot 5$

So, we have

$\sqrt{-80} = \sqrt{(-1)\cdot 16 \cdot 5}$

The square root of a product is the product of the square roots:

$\sqrt{-80} = \sqrt{(-1)}\sqrt{16}\sqrt{5}$

Since $i^2=-1$ and $4^2=16$ , we have

$\sqrt{-80} = 4i\sqrt{5}$

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2 years ago

Ximena is typing a 2500 word essay. In 9 minutes she types 396 words, at this rate can Ximena type the essay in an hour?

sasho [114]

Answer:

yes

Step-by-step explanation:

396÷ 9= 44

44×60= 2,640 > 2500

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2 years ago

-2(-5x+5) - 3x + 4= -34 solve for x

geniusboy [140]

Answer:

x = -4

Step-by-step explanation:

-2(-5x+5) - 3x + 4= -34

10x - 10 -3x + 4 = -34

7x - 6 = -34

<u> +6 + 6</u>

7x = -28

x = -4

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2 years ago

Read 2 more answers

Write the inequality |x - 2| < 3 without absolute value symbols.

kotegsom [21]

$|x-2| < 3\Rightarrow x-2 < 3\ \wedge\ x-2 > -3\ \ \ \ |+2\\\\x < 5\ \wedge\ x > -1$

$x\in(-1,\ 5)$

4 0

2 years ago