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pogonyaev
2 years ago
15

HW#1: Polygons- Interior and Exterior Angle Sum Theorem

Mathematics
1 answer:
levacccp [35]2 years ago
4 0
(9x-18)=162 it’s very simple
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Expand and simplify <img src="https://tex.z-dn.net/?f=%20%283x-2%29%5E%7B2%7D%20" id="TexFormula1" title=" (3x-2)^{2} " alt=" (3
Rus_ich [418]
You can just 1) multiply the binomial by itself, or you can use 2) the square of a binomial pattern. I'll show it to you both ways.

1) Multiply the binomial by itself.

(3x - 2)^2 = (3x - 2)(3x - 2) =

Multiply every term of the first binomial by every term of the second binomial, then collect like terms. (This is often called using FOIL.)

= 9x^2 - 6x - 6x + 4

= 9x^2 - 12x + 4

2) Use the square of a binomial pattern

The square of a binomial is

(a - b)^2 = a^2 - 2ab - b^2

a^2 is the square of the first term.
b^2 is the square of the second term.
-2ab is the product of the two terms and 2.

You have

(3x - 2)^2,
where the first term is 3x, and the second term is -2

square the first term: 9x^2
square the last term: 4
the product of the terms and 2 is: -12x

Put it all together, and you get

9x^2 - 12x + 4

just like we got above with the other method.
7 0
3 years ago
Help!<br> C + -328 = 477
krek1111 [17]
The answer for c would be 805
8 0
2 years ago
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Evgesh-ka [11]

Answer:6 i think

Step-by-step explanation:

6 0
3 years ago
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This table is proportional. What is the constant of proportionality?<br> k=
swat32

Answer:

huh

Step-by-step explanation:

5 0
3 years ago
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the art teacher is sending home a total of 3,150 projects before winter break if each of her 150 students had the same number of
Alenkinab [10]

Answer:

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Step-by-step explanation:

3150 ÷150

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3 years ago
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