Q2 of 83 Page 90

Find the roots of the following equations by the method of perfect square:

x2 – 10x + 25 = 0

x2— 2(1)(5)x + 52 = 0

⇒ (x – 5)2 = 0


⇒ (x – 5)(x – 5) = 0


⇒ x – 5 = 0 or x – 5 = 0


⇒ x = 5


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