Question

factorise the following expression
(a) 7n^2+16n+9​

Answer 1

Answer:

7n²+16n+9

7n²+7n+9n+9=0

7n(n+1) +9(n+1)=0

(7n+9) (n+1)

putting equal 0

n=-9/7 and n= -1

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Answer 2

Answer:

$(7n + 9)(n + 1)$