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dem82 [27]
3 years ago
11

Simplify (4x+5y)(2x-3y)+3xy

Mathematics
2 answers:
TiliK225 [7]3 years ago
6 0
It would be 8x² - 15y² + xy

(4x + 5y) (2x - 3y) + 3xy
multiplying the terms in brackets
(4x) (2x - 3y) + (5y) (2x - 3y) + 3 xy
multiplying with each terms inside the bracket
(4x)(2x) - (4x) (3y) + (5y) (2x) - (5y) (3y) + 3xy
doing the product each of the pair of terms
8x² - 12xy + 10xy - 15y² + 3xy
taking the sum of terms with coefficient "xy"
8x² - 15y² -2xy + 3xy
8x² - 15y² + xy
emmainna [20.7K]3 years ago
6 0

Answer:

8x²+15xy²+xy

Step-by-step explanation:

hope this helps

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What number is greater than -8 and less than 0.
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-7,-6,-5,-4,-3,-2,-1
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The population of rabbits in an area is modeled by the growth equation p(t)=8e^0.26t, where P is in thousands and T is in years.
Elena-2011 [213]

Answer:

4.4

years corresponding to 4 years and 5 months (more or less)

Step-by-step explanation:

Let us set

P

=

25

we get:

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e

0.26

t

rearrange:

e

0.26

t

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25

8

take the natural log of both sides:

ln

[

e

0.26

t

]

=

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[

25

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]

simplify:

0.26

t

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ln

[

25

8

]

t

=

1

0.26

ln

[

25

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=

4.38

≈

4.4

years corresponding to 4 years and 5 months (more or less)

5 0
4 years ago
3x + 1 < −2x + 8
Fantom [35]

Hello there!


The correct answer is B. Why? Well, we cannot choose A, because we don't have a multiplication sign. We cannot choose C because we also don't have a multiplication sign. However, since we have a PLUS sign and a Subtraction sign, we can say that the correct answer is option B.


3x + 1 < -2x + 8

We wanna start by subtracting 1 on both sides

3x + 1 - 1 < -2x + 8 - 1

3x < -2x + 7

Add 2x on both sides

3x + 2x < -2x + 7 + 2x

5x < 7

x < 7/5


I hope this answer helps! As always, it is my pleasure to help students like you. If you have any additional questions, feel free to comment them down below. I'll see you around!

8 0
3 years ago
What is the number that when you multiply by six and subtract four to the product you get 32
Furkat [3]

Answer:

6

Step-by-step explanation:

32 + 4 = 36

36 / 6 = 6

3 0
3 years ago
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