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x+7=0 x-4=0 (x+7)(x-4)=0 how would you compare the three questions? what value(s) of x would make each equation true?



Answer :

konrad509
[tex](x+7)(x-4)=0 \Leftrightarrow x+7=0 \vee x-4=0\\ x=-7 \vee x=4[/tex]
[tex]x+7=0 \\ \boxed{x=-7} \\ \\ x-4=0 \\ \boxed{x=4} \\ \\ (x+7)(x-4)=0[/tex]
[tex]x+7=0[/tex] or [tex]x-4=0[/tex]
[tex]x=-7[/tex] or [tex]x=4[/tex]

S= {-7 ; 4}

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