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3 years ago

12

Factor the polynomial: 3x^2 - 9x - 30

2 answers:

svp [43]3 years ago

8 0

NICKI IS THE QUEEN OF RAPPP

soldi70 [24.7K]3 years ago

3 0

It would be 3(x-5)(x+2)

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In the picture PLEASE HELP

Debora [2.8K]

I believe it's not a function because the input (x) 4 has two outputs(y), 2 and 8.

5 0

3 years ago

Find a quadratic equation with roots -1, 4i and -1 - 4i

vazorg [7]

$\bf \textit{difference of squares}
\\\\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)
\\\\\\
\textit{also recall that }i^2=-1\\\\
-------------------------------\\\\
\begin{cases}
x=-1+4i\implies &x+1-4i=0\\
x=-1-4i\implies &x+1+4i=0
\end{cases}
\\\\\\
(x+1-4i)(x+1+4i)=\stackrel{y}{0}
\\\\\\\
[(x+1)~~-~~(4i)][(x+1)~~+~~(4i)]=y
\\\\\\\
[(x+1)^2~~-~~(4i)^2]=0\implies (x^2+2x+1)~-~(4^2i^2)=y
\\\\\\
(x^2+2x+1)~-~(16\cdot -1)=y\implies (x^2+2x+1)~-~(-16)=y
\\\\\\
x^2+2x+1~~+16=y\implies x^2+2x+17=y$

3 0

3 years ago

How to do complete the number line using the following fractions

Sloan [31]

You line them up from smallest to greatest

5 0

3 years ago

Do y’all know the answer to this ?

AleksAgata [21]

Nope idk sorry babe

7 0

3 years ago

Read 2 more answers

Plz read the directions I really don’t understand it....<br> Plz follow what it wants

Ira Lisetskai [31]

Answer:

Cube

Step-by-step explanation:

It makes a cube

7 0

3 years ago