Question

2-) Qual é o polinômio que obtemos quando multiplicamos: a²b3 + 4,5c² por a²b3 - 4,5c²​

Answer 1

Resposta:

$\bold{a^{4} b^{6} -20,25 c^{4} }$

Explicação passo a passo:

$(a^{2} b^{3} +4,5c^{2} ) *(a^{2} b^{3} -4,5c^{2} )\\\\(a^{2} b^{3})^{2} -(4,5c^{2})^{2} \\\\(a^{2})^{2}(b^{3})^{2}-(4,5)^{2}(c^{2})^{2}\\\\a^{2(2)} b^{3(2)} -(\frac{9}{2} )^{2} c^{2(2)} \\\\a^{4} b^{6} -\frac{9^{2} }{2^{2} } c^{4} \\\\a^{4} b^{6} -\frac{81 }{4 } c^{4} \\\\\bold{a^{4} b^{6} -20,25 c^{4} }$