factorise 25m²+30m+9
Answers
Answered by
5
(5m)^2+30m+3^2
5m^2+(2×5m×3)+3^2
a=5m,b=3
(a+b)^2=a^2+b^2+2ab
Answered by
8
Step-by-step explanation:
25m^2+30m+9
25m^2+15m+15m+9
5m(5m+3)+3(5m+3)
(5m+3)(5m+3)
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