Question

a^2 + 3a para a= -1/2​

Answer 1

Resposta:

${a}^{2} + 3a \: para \: a = - \frac{1}{2} \\ ( - { \frac{1}{2} }^{2}) + 3( - \frac{1}{2} )= \\ \frac{1}{4} - \frac{3}{2} = \frac{1 - 6}{4} = \frac{ - 5}{4}$