हिंदी

Solve the following equation by factorization: 6x(3x – 7) = 7(7 – 3x)

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प्रश्न

Solve the following equation by factorization:

6x(3x – 7) = 7(7 – 3x)

योग
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उत्तर

Given,

⇒ 6x(3x – 7) = 7(7 – 3x)

⇒ 18x2 – 42x = 49 – 21x

⇒ 18x2 – 42x + 21x – 49 = 0

⇒ 6x(3x – 7) + 7(3x – 7) = 0

⇒ (3x – 7)(6x + 7) = 0

⇒ (3x – 7) = 0 or (6x + 7) = 0   ...[Using zero-product rule]

⇒ 3x = 7 or 6x = –7

⇒ `x = 7/3` or `x = (-7)/6`

Hence, `x = {7/3, (-7)/6}`.

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अध्याय 5: Quadratic Equation - EXERCISE 5A [पृष्ठ ५३]

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आर.एस. अग्रवाल Mathematics [English] Class 10 ICSE
अध्याय 5 Quadratic Equation
EXERCISE 5A | Q 20. | पृष्ठ ५३
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