मराठी

Solve the following equation by factorization: x^2 + 17 = 18x

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प्रश्न

Solve the following equation by factorization:

x2 + 17 = 18x

बेरीज
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उत्तर

Given,

⇒ x2 + 17 = 18x

⇒ x2 – 18x + 17 = 0

⇒ x2 – 17x – x + 17 = 0

⇒ x(x – 17) – 1(x – 17) = 0

⇒ (x – 1)(x – 17) = 0

⇒ x – 1 = 0 or x – 17 = 0   ...[Using zero-product rule]

⇒ x = 1 or x = 17

Hence, x = {1, 17}.

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

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आर. एस. अग्रवाल Mathematics [English] Class 10 ICSE
पाठ 5 Quadratic Equation
EXERCISE 5A | Q 9. | पृष्ठ ५३
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