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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

(X - 4) (2x + 3 ) = 2x² - Mathematics

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प्रश्न

(x - 4) (2x + 3 ) = 2x²

बेरीज
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उत्तर

(x - 4) (2x + 3 ) = 2x²

⇒ x (2x + 3) - 4 (2x + 3) = 2x²

⇒ 2x² + 3x - 8x - 12 = 2x²

⇒ 2x² + 3x - 8x - 2x² = 12

⇒ - 5x = 12

⇒ x = `12/-5 = (-12)/5`

∴ x = `-2 2/5`

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पाठ 12: Simple Linear Equations (Including Word Problems) - Exercise 12 (B)

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सेलिना Concise Mathematics [English] Class 7 ICSE
पाठ 12 Simple Linear Equations (Including Word Problems)
Exercise 12 (B) | Q 18
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