1rBTX 02. POLINOMIS/1.2.0 Repàs de polinomis 1.2.0.61Q Resol ax^2+bx+c factoritzant Factoritza i resol: #e #v 0

Format de la resposta:

Factoritza: 2(x-1)(x-2)

Resol:

Entre dos nombres: «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»-«/mo»«mn»2«/mn»«mo»§lt;«/mo»«mi»x«/mi»«mo»§#8743;«/mo»«mn»5«/mn»«mo»§lt;«/mo»«mi»x«/mi»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»(«/mo»«mo»§#8743;«/mo»«mo»=«/mo»«mi»i«/mi»«mo»)«/mo»«/math»
Altres situacions: «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«mo»§lt;«/mo»«mo»-«/mo»«mn»2«/mn»«mo»§#8744;«/mo»«mi»x«/mi»«mo»§#62;«/mo»«mn»5«/mn»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»(«/mo»«mo»§#8744;«/mo»«mo»=«/mo»«mi»o«/mi»«mo»)«/mo»«/math»

]]> 1.0000000 0.3333333 0 0 Factoritza=#f5Resol =#sol]]>

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xmlns="http://www.w3.org/1998/Math/MathML"><mi>F</mi><mi>a</mi><mi>c</mi><mi>t</mi><mi>o</mi><mi>r</mi><mi mathvariant="normal">i</mi><mi>t</mi><mi>z</mi><mi>a</mi><mo>=</mo><mo>#</mo><mi>f</mi><mn>5</mn><mspace linebreak="newline"/><mi>R</mi><mi mathvariant="normal">e</mi><mi>s</mi><mi>o</mi><mi>l</mi><mo> </mo><mo>=</mo><mo>#</mo><mi>s</mi><mi>o</mi><mi>l</mi></math>]]></correctAnswer></correctAnswers><assertions><assertion name="syntax_expression"/><assertion name="equivalent_symbolic"/></assertions><options><option name="tolerance">10^(-4)</option><option name="relative_tolerance">false</option><option name="precision">4</option><option name="implicit_times_operator">false</option><option name="times_operator">·</option><option name="imaginary_unit">i</option></options><localData><data name="inputField">popupEditor</data><data name="gradeCompound">and</data><data name="gradeCompoundDistribution"></data><data name="casSession"/><data name="inputCompound">true</data></localData></question> Primer es resol l'equació de 2n grau.

el discriminant és #d i les solucions són #x_1 i #x_2.

ES COMPROVEN AMB S = #S1 I P = #P1

Es pot factoritzar amb a·(x – x₁)(x – x₂). No oblidis el signe de a

Després es fa la taula.

]]> La taula és:

Com que a és #r1, #e és #r2, #r4, per x<#x_1 o per x>#x_2 #e és #r3, #r5, per #x_1<x i per x<#x_2
x	–∞	#x_1		#x_2	+∞
a	#s3		#s3		#s3
#k11	—	0	+		+
#k12	—		—	0	+
#e	#s1	0	#s2	0	#s1

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