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ruslelena [56]
4 years ago
10

Subtract (x3power+3x2second power)-(-2x second power-9)

Mathematics
1 answer:
arsen [322]4 years ago
8 0
<span>D = 4 - 4*9*(-7) = 4 + 252 = 256 = 16*16 
x1 = (-2 + 16)/9 = 14/ 9
x2 = (-2 - 16) / 9 = -2

If you have any other questions, feel free to comment on my wall. Hope this helped.</span>
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Find the measure of an<br> exterior angle of a regular<br> polygon with 18 sides.
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Answer:

compute its exterior angle as 360/18, which is 20 degrees

Step-by-step explanation:

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Show how to simplify this problem using the distributive property. <br> 4(12 + 6)
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Hey there!

4(12 + 6)

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6 0
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Nancy found that x=1 is one solution to the quadratic equation (x 2)2=a. what is the value of a?
trasher [3.6K]

The value of the a in the quadratic equation is 4.

According to the statement

we have given that the x = 1 and the given equation is  (2x)^2=a

And we have to find the value of A here.

So, For this purpose, we know that the

A quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared.

And the given quadratic equation is

(2x)^2 = a

we know that the x  = 1 and put the value of x in it then

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a  = 4.

Now for rechecking of the value, put a = 4 in the given equation then

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Put a  = 4

Then

(2x)^2 = 4

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x = 1.

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So, The value of the a in the quadratic equation is 4.

Learn more about Quadratic equation here

brainly.com/question/1214333

#SPJ4

7 0
2 years ago
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