Mathematics
Solve the following equation by factorization:
= (2x - 1)
Quadratic Equations
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Answer
Given,
⇒ = (2x - 1)
Squaring both sides we get :
⇒ (3x2 - 2) = (2x - 1)2
⇒ 3x2 - 2 = (2x)2 + (1)2 - 2 × 2x × 1
⇒ 3x2 - 2 = 4x2 + 1 - 4x
⇒ 4x2 + 1 - 4x - 3x2 + 2 = 0
⇒ x2 - 4x + 3 = 0
⇒ x2 - x - 3x + 3 = 0
⇒ x(x - 1) - 3(x - 1) = 0
⇒ (x - 1)(x - 3) = 0
⇒ (x - 1) = 0 or (x - 3) = 0 [Using Zero-product rule]
⇒ x = 1 or x = 3.
Hence, x = {1, 3}.
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