Question

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Answer 1

Answer:

3) (P+21)(P+2)

Step-by-step explanation:

P²+23P+42

42×1=42. FACTORS OF 42 ARE 7,6,21,2,3,1&42. FIND THE PAIR WHICH ON ADDING GIVES 23.

21+2=23. ASLO THEY MUST BE SO THAT THEIR PRODUCT = 42×1=42.

HERE ×1 IS FOR THE COEFFICIENT OF P².

SO IT IS P²+21P+2P+42

P(P+21)+2(P+21)

(P+21)(P+2).

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