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प्रश्न
Find the product of 3(x – 5) × 2(x – 1)
उत्तर
3(x – 5) × 2(x – 1) = (3 × 2)(x – 5)(x – 1)
= 6 × [x(x – 1) – 5(x – 1)]
= 6[x(x) – x(1) – 5(x) + (–) (–) 5(1)]
= 6[x2 – x – 5x + 5]
= 6[x2 + (–1 – 5)x + 5]
= 6[x2 – 6x + 5]
= 6x2 – 36 x + 30
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