Sagot :
(x+7)(x+7)=3x
[tex] x^{2} +7x+7x+49=3x[/tex]
[tex]x^2+14x+49=3x[/tex]
[tex]x^2+14x-3x+49=0[/tex]
[tex]x^2+11x+49=0[/tex]---------- this is the answer
[tex] x^{2} +7x+7x+49=3x[/tex]
[tex]x^2+14x+49=3x[/tex]
[tex]x^2+14x-3x+49=0[/tex]
[tex]x^2+11x+49=0[/tex]---------- this is the answer