3 years ago

1) what is the answer to 5(3x-2y)+2(x+2y)-3(3x-2y)?

1 answer:

4 0

So first we want to distribute. (#1)

So, using the distributive property, we can:

5 * 3x - 2y * 5 + 2x + 2 * 2y - 3 * 3x - 3 * 2y

or

15x - 10y + 2x + 4y - 9x - 6y

Now just combine like terms

8x -12y

So for #1 it should be a.

#2: 2x - 3 + 3x - 5

Combine Like Terms:

2x + 3x - 3 - 5

5x - 8

So it should be b.

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2, -2, 2, -2, common ratio

adelina 88 [10]

To get -2 from 2, you would multiple by -1.

To get 2 from -2, you also would multiple by -1.

Ad infinitum.

So the common ratio is -1.

Hope this helps.

8 0

3 years ago

(2n3 - 3n4 + 7n) - (n3 - 8n4 - 7n)

deff fn [24]

Answer:

Step-by-step explanation:

(2n³ - 3n⁴ + 7n) - (n³ - 8n⁴ - 7n) = 2n³ - 3n⁴ + 7n - n³ + 8n⁴ + 7n

{Here -1 is distributed }

= 2n³ - n³ - 3n⁴ + 8n⁴ + 7n + 7n

{Combine like terms}

= n³ + 5n⁴ + 14n

8 0