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प्रश्न
Solve equation using factorisation method:
x2 – 16 = 0
उत्तर
x2 – 16 = 0
⇒ x2 – 42 = 0
⇒ (x + 4)(x – 4) = 0
Since x + 4 = 0 or x – 4 = 0
Then x = – 4 or x = 4
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