Factorise (x + 1)(x - 3) + (x + 1)(x + 4)
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Given,
⇒ (x + 1)(x - 3) + (x + 1)(x + 4)
⇒ (x + 1)[(x - 3) + (x + 4)]
⇒ (x + 1)(x - 3 + x + 4)
⇒ (x + 1)(2x + 1).
Hence, (x + 1)(x - 3) + (x + 1)(x + 4) = (x + 1)(2x + 1).
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