Question:

Determine whether the values given against each of the quadratic equation are the roots of the equation.

(1) x2 + 4x – 5 = 0, x = 1, -1

(2) 2m2 – 5m = 0, m = 2, 5/ 2

Answer:

(1) x² + 4x – 5 = 0, x = 1, -1

Solution:

(2) 2m² – 5m = 0, m = 2, 5/ 2

Solution:

∴ m = 2 is not root of the equation and m = 5/2 is a root of the equation.

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Determine whether the values given against each of the quadratic equation are the roots of the equation.

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