QUADRATIC EQUATIONSAlgebraNow take the square roots of both sides of the equation.x = (2-3)Thus, the roots of a pure quadratic equation written in general form ax2 + c = 0 arex = + and x = - .Example:Find the roots of the following pure quadratic equation.4x2 - 100 = 0Solution:Using Equation 2-3, substitute the values of c and a and solve for x.x =x =x = ± 25x = ±5Thus, the roots are x = 5 and x = -5.MA-02 Page 20 Rev. 0
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