If the quadratic equation has two equal real roots

MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

If the quadratic equation kx2+4x+1=0kx^{2}+4x+1=0 has two equal real roots, what is the value of kk? (a) −4-4 (b) 22 (c) 44 (d) 88

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