Question 474224


{{{x^2 +14x = -49}}}

{{{x^2 +14x +49=0}}}

{{{x^2 +14x +7^2=0}}}

{{{x^2 +2*7x +7^2=0}}}

{{{(x  +7)^2=0}}}

{{{(x  +7)(x  +7)=0}}}

solutions:

{{{x+7=0}}}.....->{{{x=-7}}}.........the other solution is same; so, you have one double solution..parabola is touching {{{x-axis}}} at one point, at ({{{-7}}},{{{0}}})

{{{ graph( 500, 500, -10, 10, -10, 10, x^2 +14x +49) }}}