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QUADRATIC EQUA TIONS 4 - NCERT
different quadratic equations. In this chapter , you will study quadratic equations, and various ways of finding their roots. You will also see some applications of quadratic equations in daily life situations. 4.2 Quadratic Equations A quadratic equation in the variable x is an equation of the form ax 2 + bx + c = 0, where a, b, c are real ...
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Quadratic Polynomials - University of Utah
www.math.utah.eduQuadratic formula If p(x)=ax2 +bx+c with a 6=0andif b2 4ac 0, then the roots of p(x)are b+ p b2 4ac 2a and b p b2 4ac 2a Notice in the quadratic formula, that we need a 6=0tomakesurethatwe are not dividing by 0, and we need b2 4ac 0tomakesurethatwearen’t taking the square root of a negative number. Also recall that if ax2 +bx+c has only one ...