factorise the follwing expression p2+6p+8
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p^2 + 6p + 8 = p^2+4p+2p+8 = p(p+4) + 2(p+4) = (p+2)(p+4)
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= p^2 + 2p + 4p + 8
= p(p + 2) + 4(p + 2)
= (p + 2)(p + 4) Ans.