Question 949195

{{{x(x -15) = 324}}}................fit if {{{x=27}}}, sides  are {{{x=27}}}, and {{{x=27-15=12}}}

{{{x^2 -15 = 324}}} .........does not fit,solutions are {{{x = sqrt(339)}}}, {{{x = -sqrt(339)}}}

{{{x(x + 15) = 324}}} .............fit  if {{{x=12}}},  sides  are {{{x=12}}}, and {{{x=12+15=27}}}

{{{(x + 7.5)(x - 7.5) = 324}}} .........does not fit,solutions are {{{x = -19.5}}}, {{{x = 19.5}}}

{{{x^2 + 15x -324 = 0}}} ................fit  if {{{x=12}}}, sides  are {{{x=12}}}, and {{{x=12+15=27}}}