5. Factorise the following expressions.
(i) p? + 6p + 8 (ii) q? – 109 +21
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Answer:
1.p²+6p+8
= p²+4p+2p+8
=p(p+4)+2(p+4)
= (p+4)(p+2)...ans.
2. p²-10p+21
=p²-7p-3p+21
=p(p-7)-3(p-7)
=(p-7)(p-3).......ans
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