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STatiana [176]
3 years ago
13

Find the following expression by multiplying. (a + b)^ 2

Mathematics
2 answers:
Elis [28]3 years ago
8 0
=(x+y)^{2} \\= (x+y)(x+y) \\= x^{2} +xy+xy+y ^{2} \\= x^{2} +2xy+y ^{2} 



dezoksy [38]3 years ago
5 0
(a+b)^2
=2a+2b( u can keep simplifying if it is possible)
=2ab
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Help someone please ASAP
Klio2033 [76]

1.

3 x 4 = 12

3 + 4 = 12

The two integers a and b are : 3 and 4


2.

-4 x 1 = -4

-4 + 1 = -3

The two integers a and b are : -4 and 1


3.

-3 x -3 = 9

-3 + -3 = -6

The two integers a and b are : -3 and -3


There you go! I really hope this helped, if there's anything just let me know! :)

7 0
3 years ago
A student heats a crucible and sample of a hydrate as directed in the lab procedure. However, the student removes the crucible f
vampirchik [111]

Answer:

The mass will alter with time as water is absorbed back into the crystals.

Step-by-step explanation:

5 0
3 years ago
Please answer this question ONLY IF YOU KNOW THE ANSWER!! 40 points and brainliest!!
ololo11 [35]

Answer:

2/6 is the answer you are looking for.

Step-by-step explanation:

The is 1 tile that is needed and two others that aren't so you would have 1/3 which means one out of three outcomes. And you have two spins which makes you multiply the fraction by two. Giving you 2 out of 6 outcomes.

6 0
2 years ago
HELP PLEASE! Can you please explain so I can understand how it was completed?
nlexa [21]

Answer:

(3 square root of 2 , 135°), (-3 square root of 2 , 315°)

Step-by-step explanation:

Hello!

We need to determine two pairs of polar coordinates for the point (3, -3) with 0°≤ θ < 360°.

We know that the polar coordinate system is a two-dimensional coordinate. The two dimensions are:

  • The radial coordinate which is often denoted by r.
  • The angular coordinate by θ.

So we need to find r and θ. So we know that:

r=\sqrt{x^{2}+y^{2}}       (1)

x = rcos(θ)                                   (2)

x = rsin(θ)                                    (3)

From the statement we know that (x, y) = (3, -3).

Using the equation (1) we find that:

r=\sqrt{x^{2}+y^{2}}=\sqrt{3^{2}+(-3)^{2}} = 3\sqrt{2}

Using the equations (2) and (3) we find that:

3 = rcos(θ)

-3 = rsin(θ)

Solving the system of equations:

θ= -45

Then:

r = 3\sqrt{2}[/tex]

θ= -45 or 315

Notice that  there are two feasible angles, they both have a tangent of -1. The X will take the positive value, and Y the negative one.

So, the solution is:

(3 square root of 2 , 135°), (-3 square root of 2 , 315°)

4 0
3 years ago
Pls, help! I don't understand this!
aliya0001 [1]
2. the scale factor is x= 4.5 cm
this is because when u see how much it dilated from 4cm to 2cm it divided from 2, so if u did the same for the other number. Which is 9, it’s 9/2 which equals 4.5
4 0
2 years ago
Read 2 more answers
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