Question

x
${x}^{2} - 5x + 4 = 0$
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Answer 1

${x}^{2} - 5x + 4 = 0 \\ \\ \\ a = 1 \\ b = - 5 \\ c = 4 \\ \\ \\ {b}^{2} - 4.a.c \\ \\ ( - 5) { }^{2} - 4.1.4 \\ 25 - 16 \\ 9 \\ \\ \\ \frac{ - ( - 5) + - \sqrt{9} }{2.1} \\ \\ \\ \frac{5 + - 3}{2} > \frac{5 + 3}{2} \\ \\ e \frac{5 - 3}{2} \\ \\ \frac{8}{2} e \frac{2}{2} \\ \\ s = |4e1|$