Quadratic Equations | Learning Zone

If, 2×2 + 4x − 5 = x2 +2x + x2 + 5, then x2 =

The set of values of p for which the roots of the equation 3×2 + 2x + p(p − 1) = 0 are of opposite sign is ?

One root of x2 + kx – 8 = 0 is square of the other. Then the value of k is ?

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The HCF of two positive numbers is 12 and their LCM is 672. If one of them is 12 more than the other, the two numbers are-