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3x+2/3=2x+1 pls solve this linear equation |
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Answer» + 1)2 = 2(x – 3)(ii) x2 – 2x = (–2)(3 – x) (iii) (x – 2)(x + 1) = (x – 1)(x + 3)(iv) (x – 3)(2x + 1) = x(x + 5) (V) (2x – 1) (x – 3) – (x + 5) (x – 1)(VI) x2 + 3x +1 = (x – 2)2 (vii) (x + 2)3 = 2x(x2 – 1)(viii) x3 – 4x2 – × + 1 = (x – 2)3Sol. (i) (x + 1)2 = 2(x – 3) We have: (x + 1)2 = 2 (x – 3) x2 + 2x + 1 = 2x – 6 ⇒ x2 + 2x + 1 – 2x + 6 = 0 ⇒ x2 + 70 Since x2 + 7 is a QUADRATIC polynomial ∴ (x + 1)2 = 2(x – 3) is a quadratic equation. |
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