Verified answer

Formula:

[tex] \boxed {\bold{ {x}^{2}(sum)x + product = 0}}[/tex]

Solution:

#1.

[tex] \implies {x}^{2} - (2)x + 4 = 0[/tex]

[tex]\implies { \underline{ \underline{ {x}^{2} - 2x + 4 = 0}}}[/tex]

#2.

[tex]\implies {x}^{2} - ( - 5)x + ( - 3) = 0[/tex]

[tex]\implies { \underline{ \underline{ {x}^{2} + 5x - 3 = 0 }}}[/tex]

#3.

[tex]\implies {x}^{2} - ( - 4)x + 8 = 0[/tex]

[tex]\implies { \underline{ \underline{ {x}^{2} + 4x + 8 = 0}}}[/tex]

[tex] \: [/tex]

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