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alexandr1967 [171]
3 years ago
9

Need helppp ASAP!!!!!

Mathematics
2 answers:
slava [35]3 years ago
8 0
The answer you would be looking for would be 18 when using the order of operations!
hram777 [196]3 years ago
3 0

Answer

Step-by-step explanation:

3+2=5

5 squared= 25

25-7= 18

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2. Andrew made an error in determining the polynomial equation of smallest degree whose roots are 3, 2+2i and 2-2i.
inna [77]

The polynomial equation for the given roots is x³-7x²+20x-24=0.

Given that, the polynomial equation of the smallest degree whose roots are 3, 2+2i and 2-2i.

Now, we need to write the polynomial equation.

<h3>What is a polynomial equation? </h3>

A polynomial equation is an equation where a polynomial is set equal to zero. i.e., it is an equation formed with variables, non-negative integer exponents, and coefficients together with operations and an equal sign. It has different exponents. The highest one gives the degree of the equation. For an equation to be a polynomial equation, the variable in it should have only non-negative integer exponents. i.e., the exponents of variables should be only non-negative and they should neither be negative nor be fractions.

Now, x=3, x=2+2i and x=2-2i

x-3, x-2-2i and x-2+2i

So, the polynomial equation is (x-3)(x-2-2i)(x-2+2i)=0

⇒(x-3)(x(x-2-2i)-2(x-2-2i)+2i(x-2-2i))=0

⇒(x-3)(x²-2x-2xi-2x+4+4i+2xi-4i-4i²)=0

⇒(x-3)(x²-2x-2x+4-4i²)=0

⇒(x-3)(x²-4x+4+4)=0 (∵i²=-1)

⇒(x-3)(x²-4x+8)=0

⇒x(x²-4x+8)-3(x²-4x+8)=0

⇒x³-4x²+8x-3x²+12x-24=0

⇒x³-7x²+20x-24=0

Therefore, the polynomial equation for the given roots is x³-7x²+20x-24=0.

To learn more about the polynomial equation visit:

brainly.com/question/20630027.

#SPJ1

3 0
1 year ago
Marco has $38.43 dollars in his checking account. His checking account is linked to his amazon music account so he can buy music
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Step-by-step explanation:

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Variable x represents the number of songs purchased

Not sure why this question didn't save the answer I just wrote (I'm new to the app)

5 0
2 years ago
If I ride 3 1/4 miles at 2/5 miles per minute how fast I’m going
Bogdan [553]

To get your answer, you would divide your distance by your speed. You should be going about 1.4 miles per hour.

3 0
3 years ago
4 1/4 + 3 2/6 solved <br>​
Fiesta28 [93]
7 10/12 is your answer
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3 years ago
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Benisha graphed point G on the coordinate grid. She will graph point H at a location 5 units away from point G.
IgorC [24]
C

(1, 3) is 5 units to the right of (-4, 3)
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3 years ago
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