Mathematics
Solve the following equation by factorization:
Quadratic Equations
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Answer
Given,
⇒ (x + 1)(2x - 5) = (3x - 7)(x - 1)
⇒ (2x2 - 5x + 2x - 5) = (3x2 - 3x - 7x + 7)
⇒ (2x2 - 3x - 5) = (3x2 - 10x + 7)
⇒ (3x2 - 10x + 7) - (2x2 - 3x - 5) = 0
⇒ 3x2 - 10x + 7 - 2x2 + 3x + 5 = 0
⇒ x2 - 7x + 12 = 0
⇒ x2 - 3x - 4x + 12 = 0
⇒ x(x - 3) - 4(x - 3) = 0
⇒ (x - 4)(x - 3) = 0
⇒ (x - 4) = 0 or (x - 3) = 0 [Using Zero-product rule]
⇒ x = 4 or x = 3.
Hence, x = {3, 4}.
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