Question

2. Factorise: x2 + 17x + 72 by splitting the middle term.​

Answer 1

Step-by-step explanation:

x2 +17x + 72

x2+ (8+ 9)x + 72

x2+ 8x + 9x +72

x (x+8) +9 (x+8)

(x+8) (x+9)

x= -8

x= -9

Answer 2

Answer:

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Step-by-step explanation:

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