expand 4(u-5)

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

☐²

x^☐

√☐

^□√☐

□□

log_□

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

simplify solve for inverse tangent line

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Steps Examples

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4k−63k−9 =3

Solution

k=215

Decimal

k=4.2

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Solution steps

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4k−63k−9 =3

Multiply both sides by 3k−9

4k−6=3(3k−9)

Expand 3(3k−9): 9k−27

4k−6=9k−27

Move 6 to the right side

4k=9k−21

Move 9k to the left side

−5k=−21

Divide both sides by −5

k=215

Verify Solutions

Find undefined (singularity) points: k=3

Combine undefined points with solutions:

k=215

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

expand 4(u-5)

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