9x^4 -18x^2 + 5=0
Let y be x^2 9y^2-18y+5=0
(3y-5)(3y-1)=0
3y-5=0 or 3y-1=0
3x^2-5=0 3x^2-1=0
x^2=±√5/3 x=±1/√3
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at first the first person to solve the quadratic equation is from the middle kingdom of Egypt. Greeks were also able to solve the quadratic equation but that was on the unproper way. Greeks were able to solve the quadratic equation by geometric method or equlid's method. equlid's method contains only three quadratic equation. dipohantus have also solved the quadratic equations but he have solved by giving only two roots any they both were only of positive signs.After that arbhatya also gave the two formulas for quadratic equation but the bentaguptahave only accepted only one of them after theat some of the Indian mathematican have also solved the quadratic equation who gave the proper definations and formula and in this way quadratic equation have been formed. Prabesh Regmi Kanjirowa National School
The Quadratic formula in mathematics is used to solve quadratic equations in algebra. The simplest way to solve these equations is to set each of the factors to zero and then solve each factor separately.
The roots of the quadratic equation are the x-intercepts of the curve.
josh hutcherson
By using the quadratic equation formula