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TEA [102]
2 years ago
11

HELP WILL MARK AS BRAINLIEST!!! AS SOON AS POSSIBLE (I ONLY HAVE LIKE 10 MINITES LEFT)

Mathematics
1 answer:
NemiM [27]2 years ago
6 0

8765

Step-by-step explanation

its 9  i took a test  and it was the answer

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56y - 8 in Distributive Property
FromTheMoon [43]

Answer:

8 ( 7 − 1 )

Step-by-step explanation:

Find the common factor.

4 0
2 years ago
Find an n^th degree polynomial with real coefficients satisfying the given conditions. n = 3; -2 and 2 i are zeros; f(-1) = 15.
Ira Lisetskai [31]
So, n = 3, is a 3rd degree polynomial, roots are -2 and 2i

well 2i is a complex root, or imaginary, and complex root never come all by their lonesome, their sister is always with them, the conjugate, so if 0+2i is there, 0-2i is there too

so, the roots are -2, 2i, -2i

now... \bf \begin{cases}
x=-2\implies x+2=0\implies &(x+2)=0\\
x=2i\implies x-2i=0\implies &(x-2i)=0\\
x=-2i\implies x+2i=0\implies &(x+2i)=0
\end{cases}
\\\\\\
(x+2)\underline{(x-2i)(x+2i)}=0\\\\
-----------------------------\\\\
\textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-----------------------------\\\\
(x+2)[x^2-(2i)^2]=0\implies (x+2)[x^2-(2^2i^2)]=0
\\\\\\
(x+2)[x^2-(4\cdot -1)]=0\implies (x+2)(x^2+4)=0
\\\\\\
x^3+2x^2+4x+8=0

now, if we check f(-1), we end up with 5, not 15
hmmm

so, how to turn our 5 to 15? well, 3*5, thus

\bf 3(x^3+2x^2+4x+8)=f(x)\implies 3(5)=f(-1)\implies 15=f(-1)

usually, when we get the roots, or zeros, if any common factor that is a constant is about, they get in a division with 0 and get tossed, and aren't part of the roots, thus, we can simply add one, in this case, the common factor of 3, to make the 5 turn to 15
6 0
3 years ago
Eric put two angles together to form a straight angle. One angle is 115
Anastaziya [24]
The other angle is 65 degrees
4 0
3 years ago
What is the simplified form of the following expression?
Anna71 [15]

Answer:

i-

Step-by-stes 32 p explanation:

6 0
2 years ago
I want to buy game for $40.write expression to show how many weeks will take me to save enough to buy the $40 game.use parenthes
dezoksy [38]
W-g=40 week games  ypu have to save so many weeks to get to 40 so save
7 0
3 years ago
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