⇒ 30x2 + 270x + 520 = 48x2 + 352x + 112⇒ 18x2 + 82x – 408 = 0⇒ 9x2 + 41x – 204 = 0⇒ 9x2 + 68x – 27x – 204 = 0⇒ x (9x + 68) – 3(9x + 68) = 0⇒ (x – 3) (9x + 68) = 0⇒ x = 3 and x = -68/3

Q4 of 65 Page 10

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⇒ 30x² + 270x + 520 = 48x² + 352x + 112

⇒ 18x² + 82x – 408 = 0

⇒ 9x² + 41x – 204 = 0

⇒ 9x² + 68x – 27x – 204 = 0

⇒ x (9x + 68) – 3(9x + 68) = 0

⇒ (x – 3) (9x + 68) = 0

⇒ x = 3 and x = -68/3

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Questions · 65

1. Quadratic Equations in One Variable

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