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pogonyaev
2 years ago
12

Pls help the first correct answer gets brainleist​

Mathematics
1 answer:
LenaWriter [7]2 years ago
4 0

Answer:

a=3 (i think)

Step-by-step explanation:

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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}
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x=-1-4i\implies &x+1+4i=0
\end{cases}
\\\\\\
(x+1-4i)(x+1+4i)=\stackrel{y}{0}
\\\\\\\
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\\\\\\\
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x^2+2x+1~~+16=y\implies x^2+2x+17=y
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3 years ago
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