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otez555 [7]
2 years ago
9

I need to simplify for the question

Mathematics
2 answers:
Afina-wow [57]2 years ago
7 0

Answer:

x^2 + 3xy + 4y^2

Step-by-step explanation:

(x - 2y)^2 + 7xy =

= (x - 2y)(x - 2y) + 7xy

= x^2 -2xy - 2xy + 4y^2 + 7xy

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

Anastaziya [24]2 years ago
6 0

Answer:

\tt x^2+3xy+4y^2

Step-by-step explanation:

\tt(x-2y)^2+7xy\\\\=x^2-4xy+4y^2+7xy\\\\=x^2+3xy+4y^2

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Alina [70]
2)
4x-10y=12

Subtract 4x from each side.
-10y=-4x+12

Divide both sides by -10
y=2/5x-6/5

3)
13=1/6y+2x

Subtract 2x from each side.
-2x+13=1/6y

Multiply both sides by 6.
-12x+78=y

Flip it around.
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Hope this helps!
5 0
3 years ago
There are 123 students going on a field trip to pan for gold. If they are going in vans that hold 5 students each, how many vans
Sav [38]
25 busses will be needed for the trip
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andrey2020 [161]

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6 0
2 years ago
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Solve the equation, and check the solutions (√x+3)+6=3.
larisa86 [58]

Answer:

The equation has no solution.

Step-by-step explanation:

Hi there!

First, let´s write the equation:

(√x + 3) + 6 = 3

To solve the equation, let´s subtract 6 to both sides of the equation:

√x + 3 = -3

subtract 3 to both sides of the equation:

√x = -6  (the square root of any number can´t be negative, but let´s solve it anyway and then check the solution).

Square both sides of the equation:

x = 36

Now, let´s check the solution:

(√x + 3) + 6 = 3

x = 36

(√36 + 3) + 6 = 3

(6 + 3) + 6 = 3

9 + 6 = 3

15 ≠ 3

Then, the equation has no solution.

Have a nice day!

6 0
2 years ago
Which statement is logically equivalent to the following conditional statement?
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Hi there! Your answer would be:

D, If it is an octagon, then it does not have exactly five sides.

I also know because I took this exam and it was correct.


Hope that helps!

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