4t ESO/4.01 NOMBRES/4.01.1 Els nombres racionals 4.01.1.104 Jerarquia parèntesis: pràctica 4 Calcula el resultat de les operacions següents:
#a_1 · (#a_22 – #a_3) + #a_4 · (#a_52 + #a_6 + #a_7)

Resultat: {#1}




]]> 1.0000000 0.5000000 0 <question><wirisCasSession><![CDATA[<session lang="ca" version="2.0"><library closed="false"><mtext style="color:#ffc800" xml:lang="es">variables</mtext><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><apply><csymbol definitionURL="http://www.wiris.com/XML/csymbol">repeat</csymbol><mtable><mtr><mtd><mi>a_1</mi><mo>=</mo><mi>aleatori</mi><mo>(</mo><mn>12</mn><mo>,</mo><mn>29</mn><mo>)</mo></mtd></mtr><mtr><mtd><mi>a_2</mi><mo>=</mo><mi>aleatori</mi><mo>(</mo><mn>12</mn><mo>,</mo><mn>29</mn><mo>)</mo></mtd></mtr><mtr><mtd><mi>a_3</mi><mo>=</mo><mi>aleatori</mi><mo>(</mo><mn>12</mn><mo>,</mo><mn>29</mn><mo>)</mo></mtd></mtr><mtr><mtd><mi>a_4</mi><mo>=</mo><mi>aleatori</mi><mo>(</mo><mn>12</mn><mo>,</mo><mn>29</mn><mo>)</mo></mtd></mtr><mtr><mtd><mi>a_5</mi><mo>=</mo><mi>aleatori</mi><mo>(</mo><mn>12</mn><mo>,</mo><mn>29</mn><mo>)</mo></mtd></mtr><mtr><mtd><mi>a_6</mi><mo>=</mo><mi>aleatori</mi><mo>(</mo><mn>12</mn><mo>,</mo><mn>29</mn><mo>)</mo></mtd></mtr><mtr><mtd><mi>a_7</mi><mo>=</mo><mi>aleatori</mi><mo>(</mo><mn>12</mn><mo>,</mo><mn>29</mn><mo>)</mo></mtd></mtr><mtr><mtd/></mtr></mtable><mrow><mi>a_1</mi><mo>*</mo><mo>(</mo><msup><mfenced><mi>a_2</mi></mfenced><mn>2</mn></msup><mo>-</mo><mi>a_3</mi><mo>)</mo><mo>&lt;</mo><mi>a_4</mi><mo>*</mo><mo>(</mo><msup><mfenced><mi>a_5</mi></mfenced><mn>2</mn></msup><mo>+</mo><mi>a_6</mi><mo>+</mo><mi>a_7</mi><mo>)</mo></mrow></apply></math></input></command><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>r_1</mi><mo>=</mo><mi>a_1</mi><mo>*</mo><mo>(</mo><msup><mfenced><mi>a_2</mi></mfenced><mn>2</mn></msup><mo>-</mo><mi>a_3</mi><mo>)</mo><mo>+</mo><mi>a_4</mi><mo>*</mo><mo>(</mo><msup><mfenced><mi>a_5</mi></mfenced><mn>2</mn></msup><mo>+</mo><mi>a_6</mi><mo>+</mo><mi>a_7</mi><mo>)</mo></math></input></command></group></library><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>r_1</mi></math></input><output><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>23536</mn></math></output></command></group><group><command><input><math xmlns="http://www.w3.org/1998/Math/MathML"/></input></command></group></session>]]></wirisCasSession><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="casSession"/></localData></question> S'escriu amb la calculadora, fent servir els signes de les operacions +, –, ×, ÷  i la potència x2 els parèntesis ( ).

#a_1 × (#a_2 x2 – #a_3) + #a_4 × (#a_5 x2 + #a_6+#a_7) 

 

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