Question

x^2- 5x + 1
a) x=0
b)x=2
c)x= -3
d) x= 1/2

Answer 1

a)

${0}^{2} - 5 \times 0 + 1$

$1$

b)

${2}^{2} - 5 \times 2 + 1$

$4 - 10 + 1$

$- 5$

c)

${ (- 3)}^{2} - 5 \times ( - 3) + 1$

$9 - ( - 15) + 1$

$25$

d)

${ \frac{1}{2} }^{2} - 5 \times \frac{1}{2} + 1$

$\frac{1}{4} - \frac{5}{2} + 1$

$\frac{1 - 10}{4} + 1$

$\frac{ - 9 + 4}{4}$

$\frac{ - 5}{4}$

espero ter ajudado :)