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Solve the following equation by factorization: 12x^2 + 29x + 14 = 0

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Question

Solve the following equation by factorization:

12x2 + 29x + 14 = 0

Sum
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Solution

Given,

⇒ 12x2 + 29x + 14 = 0

⇒ 12x2 + 21x + 8x + 14 = 0

⇒ 3x(4x + 7) + 2(4x + 7) = 0

⇒ (4x + 7)(3x + 2) = 0

⇒ 4x + 7 = 0 or 3x + 2 = 0   ...[Using zero-product rule]

⇒ 4x = –7 or 3x = –2

⇒ `x = (-7)/4` or `x = (-2)/3`

Hence, `x = {(-7)/4, (-2)/3}`.

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Chapter 5: Quadratic Equation - EXERCISE 5A [Page 53]

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R.S. Aggarwal Mathematics [English] Class 10 ICSE
Chapter 5 Quadratic Equation
EXERCISE 5A | Q 13. | Page 53
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