Question 123885
The given quadratic equation can be written as: 


y = {{{x^2 + 7x - 18 }}} 


Y = {{{x^2 + 9x - 2x - 18}}} 


y = x(x + 9) - 2(x + 9)


y = (x - 2)(x + 9)


Thus the soln set is (-9,2) 


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