Factorise:
x2 + 6x - 7
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Given,
⇒ x2 + 6x - 7
⇒ x2 + 7x - x - 7
⇒ x(x + 7) - 1(x + 7)
⇒ (x + 7)(x - 1).
Hence, x2 + 6x - 7 = (x + 7)(x - 1).
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