How do you solve -6x=x^2+9? Algebra Quadratic Equations and Functions Comparing Methods for Solving Quadratics 1 Answer jk.13 Mar 23, 2018 x=-3 Explanation: x^2+6x+9=0 set the equation equal to 0 x^2+3x+3x+9=0 find two numbers that MULTIPLY to 9, ADD to 6 x(x+3)+3(x+3)=0 factor out GCF (x+3)(x+3)=0 x=-3 Answer link Related questions What are the different methods for solving quadratic equations? What would be the best method to solve -3x^2+12x+1=0? How do you solve -4x^2+4x=9? What are the two numbers if the product of two consecutive integers is 72? Which method do you use to solve the quadratic equation 81x^2+1=0? How do you solve -4x^2+4000x=0? How do you solve for x in x^2-6x+4=0? How do you solve x^2-6x-16=0 by factoring? How do you solve by factoring and using the principle of zero products x^2 + 7x + 6 = 0? How do you solve x^2=2x? See all questions in Comparing Methods for Solving Quadratics Impact of this question 3710 views around the world You can reuse this answer Creative Commons License