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Naily [24]
3 years ago
9

Please help with these problems! Will mark answer as brainliest and give 30 points. You have to show your work for each problem.

Mathematics
1 answer:
gulaghasi [49]3 years ago
4 0

Answer:

1) (2x + 2)(x + 2)

2)  2(x + 1)(x - 1)

3) (x^2 + 3)(x^2 - 3)

4) 2x(x + 5)(x - 2)

5) (5x + 2y)(5x - 2y)

Step-by-step explanation:

1)

2x^2 + 6x + 4

= 2x^2 + 4x + 2x + 4

= 2x(x + 2) + 2(x + 2)

= (2x + 2)(x + 2)

2)

2x^2 - 2

= 2(x^ 2 - 1) (The difference of two squares)

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

3)

x^4 - 9 (The difference of two squares)

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

4)

2x^3 + 6x^2 - 20x

= 2x(x^2 + 3x - 10)

= 2x(x + 5)(x - 2)

5)

25x^2 - 4y^2         (The difference of two squares)

= (5x + 2y)(5x - 2y)

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Find the length of square field whose area is 46.24m2​
Mazyrski [523]

Answer:

answer is <u>6.8 m</u>

Step-by-step explanation:

√46.24 m

= 6.8 m

4 0
3 years ago
64 is what 25% of what
ANEK [815]
64=0.25n
256=n

Final answer is 256
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A company that packages cold cuts needs to transport the packaged meat to the supermarket.it will cost $1,200 to rent a truck,an
nevsk [136]
The equation to solve this is $1,200+a=b, with a being the cost of the amount of cold cuts being transported and b being the total cost for the truck and the meat.
8 0
3 years ago
Read 2 more answers
Y = 2/3 when x = 0.2
azamat
Please explain some more:)
4 0
3 years ago
Y=-3x+9<br> y=-x-5 <br><br> what is the solution for the system of equations?
alexandr402 [8]

Our system of equations is:

y = -3x + 9

y = -x - 5


To solve this system of equations, we are going to use substitution. This means that we are going to substitute the second equation into the first equation since both are already solved for y in terms of x.


y = -3x + 9

-x - 5 = -3x + 9


Now, we must simplify by moving all of the constant terms to one side of the equation and all of the variable terms to the other side.


-x - 5 = -3x + 9

2x - 5 = 9

2x = 14


Finally, to undo the multiplication between the coefficient 2 and the variable x, we must divide both sides by 2 to get the variable x alone.


x = 7


Next, we must substitute in this value we have solved for x into one of the original equations to solve for the other variable, y.


y = -3x + 9

y = -3(7) + 9


To simplify, we must multiply through the parentheses and combine like terms by addition.


y = -21 + 9

y = -12


Therefore, your final answer is x = 7 and y = -12, or as an ordered pair (7, -12).


Hope this helps!

6 0
3 years ago
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