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The correct statement of 4x(x² -3x +7) |
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Answer» ∴ x² = 1/2 OR x² = 7/2Step-by-step explanation:⇒ 4X (x² - 3x + 7)⇒ 4x³ - 12x² + 7xLet a² = x³⇒ 4a² - 12a + 7⇒ 4a²+ 2A - 14A + 7⇒ 2a (2a - 1) - 7 (2a - 1)⇒ (2a - 1) (2a -7)∴ 2a - 1 = 0 OR 2a - 7 =0⇒ a = 1/2 OR a = 7/2∴ x² = 1/2 OR x² = 7/2 |
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