Question 990292
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F=first number; S=second number=2F+2
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{{{F*S=84}}}
{{{F*(2F+2)=84}}}
{{{2F^2+2F=84}}}
{{{2F^2+2F-84=0}}}
{{{F^2+F-42=0}}}
{{{(F-6)(F+7)=0}}}
{{{F-6=0}}} {{{OR}}} {{{F+7=0}}}
{{{F=6}}} {{{OR}}} {{{F=-7}}}
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ANSWER 1:Since the number s must be positive, the first number is 6.
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S=2F+2=2(6)+2=12+2=14
ANSWER 2: The second number is 14
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CHECK:
F*S=84
(6)(14)=84
84=84