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Brilliant_brown [7]
3 years ago
13

Simplify (2x + y)(x - 2y) - (x + 2y)(2x - y) as much as possible.

Mathematics
1 answer:
snow_tiger [21]3 years ago
4 0

Answer:

-6xy

Step-by-step explanation:

(2x-y)x(x-2y)-(x+2y)X(2x-y)

remove the parentheses

2x^2-4xy+xy-2y^2-(2x^2-xy+4xy-2y^2)

collect terms

2x^2-4xy+xy-2y^2-(2x^2+3xy-2y^2)

remove the parentheses

2x^2-4xy+xy-2y^2-2x^2-3xy+2y^2

remove the opposites, collect the terms to get -6xy

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Write the absolute value equation that has two solutions x=5 and x=11
Gelneren [198K]

Answer:

|8-x|=3

Step-by-step explanation:

Find the average

11+5=16

16*1/2=8

8-5=3

8-11=-3

|3|=|-3|

|8-x|=3

4 0
3 years ago
If sin⁡ θ>0 and tan⁡ θ<0, in which quadrant does the terminal side of θ lie?
AlladinOne [14]

Answer:

Quadrant IV

Step-by-step explanation:

For an angle in the fourth quadrant the point P has positive x coordinate and negative y coordinate. Therefore: In Quadrant IV, cos(θ) > 0, sin(θ) < 0 and tan(θ) < 0 (Cosine positive). The quadrants in which cosine, sine and tangent are positive are often remembered using a favorite mnemonic.

8 0
3 years ago
Pls help I will mark brainliest
NeTakaya

Answer:

r=-9

Step-by-step explanation:

We are given the equation

7r=-63

In order to solve for r, we must divide each side by 7

r=\frac{-63}{7}

This then simplifies to

r=-9

5 0
3 years ago
Read 2 more answers
To increase and increase an amount by 70%<br>what single multiplier would you use?
Zigmanuir [339]

Answer:

Increase: 1.7

Decrease: 0.3

Step-by-step explanation:

Increase:

100% + 70% = 117%

117/ 100 = 1.7 (multiplier)

Decrease:

100% - 70%= 30%

30/ 100 = 0.3 (multiplier)

5 0
3 years ago
I need help with this question. Please
Temka [501]
It should be -
x = 53 
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w = 53 
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5 0
3 years ago
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