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PIT_PIT [208]
3 years ago
5

Expand and simplify (x+3)²

Mathematics
2 answers:
Ivenika [448]3 years ago
7 0

Answer:

<h2>x² + 9 + 6x </h2>

Step-by-step explanation:

expand and simplify (x+3)²

(x+3)² =

x² + 9 + 2 × x × 3 =

x² + 9 + 6x

arsen [322]3 years ago
6 0

Answer:

x² + 6x + 9

Step-by-step explanation:

( x + 3 ) ²

( x + 3 ) ( x + 3 )

x ( x + 3 ) + 3 ( x + 3 )

x² + 3x + 3x + 9

x² + 6x + 9

Hope this helps you.

Let me know if you have any other questions :-)

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The perimeter of a rectangle is P=2(l+w), where P is perimeter, l is length, and w is width. If P=36 feet and the l=16 feet, fin
Montano1993 [528]

Answer:

Width = 2

Step-by-step explanation:

Step 1:

P = 2 ( L + W )

Step 2:

36 = 2 ( 16 + w )

Step 3:

36 = 32 + 2w

Step 4:

36 - 32 = 2w

Step 5:

4 = 2w

Answer:

2 = w

Hope This Helps :)

4 0
4 years ago
Solve the following system:
prisoha [69]

Answer:

Read explanation

Step-by-step explanation:

Use elimination

Add them all up

y = 1 ( everything else cancels )

-2x + 2(1) + z = 14

3x - 2(1) + z = -5

-x +(1) - 2z = -8

simplify

-2x + z = 12

3x + z = -3

-x -2z = -9

U can't use elimation because it would turn into 0 = 0

change last equation

x + 2z = 9

x = -2z + 9

plug that in

-2(-2z+9) + z = 12

3(-2z+9) + z = -3

-(-2z+9) - 2z = -9

4z - 18 = 12

-6z + 27 + z =-3

2z - 9 - 2z = -9

simplify

4z = 30

-5z = -30

0 = 0

z = 6

y = 1

x = -3

3 0
3 years ago
Out of 56 students in a survey, 34 like watching tv, 30 like playing video games and 8 like both watching tv and playing video g
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Answer:

8

Step-by-step explanation:

because 34-8=26

26+30=56 so 8

4 0
3 years ago
What is one disadvantage of a certificate of deposit? A. You will generally not receive interest on your investment. B. You will
Y_Kistochka [10]

Answer: b is the answer

\

Step-by-step explanation:

i did the quiz

5 0
3 years ago
How many tons are equal to 40,000 pounds
zlopas [31]
20 tons is equal to 40,000 pounds

1 ton = 2000 pounds
7 0
3 years ago
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