log_{2}(1)

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

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≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
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x²−11x+8=20

Solution

x=12, x=−1

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Completamento del quadrato

Formula quadratica

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x²−11x+8=20

Spostare 8 a destra dell'equazione

x²−11x=12

Riscrivi nella forma (x+a)²=b

(x−112 )²=1694

Per f:²(x)=a le soluzioni sono f(x)=√a, −√a

Risolvi x−112 =√1694 : x=12

Risolvi x−112 =−√1694 : x=−1

Le soluzioni dell'equazione quadratica sono:

x=12, x=−1

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Notebook

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

log_{2}(1)

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