How do you solve 4x^2-8 = 56? Algebra Quadratic Equations and Functions Comparing Methods for Solving Quadratics 1 Answer Alexander Jul 10, 2016 4x^2-8=56 4x^2=64 x^2=16 x=±4 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 1920 views around the world You can reuse this answer Creative Commons License