Question

determine o valor de delta de cada uma das equações:
a)
${x}^{2} - 10x + 25 = 0$
b)
${x}^{2} - 6x + 8 = 0$
c)
${x}^{2} - 2x + 10 = 0$
​

Answer 1

$\mathtt{a)}~\mathsf{\Delta=(-10)^2-4\cdot1\cdot25}\\\mathsf{\Delta=100-100=0}\\\mathtt{b)}~\mathsf{\Delta=(-6)^2-4\cdot1\cdot8}\\\mathsf{\Delta=36-32=4}\\\mathtt{c)}~\mathsf{\Delta=(-2)^2-4\cdot1\cdot10}\\\mathsf{\Delta=4-40=-36}$