计算这道题 (2m²+4m-3)+(5m+2)

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计算这道题 (2m²+4m-3)+(5m+2)

(2m²+4m-3)+(5m+2)
=2m^2+4m-3+5m+2
=2m^2+9m-1

(2m²+4m-3)+(5m+2)
=2m^2+9m-1

(2m²+4m-3)+(5m+2)
=2m^2+4m-3+5m+2
=2m^2+9m-1

=2m²+9m-1
=2m²+9m-5+4
=(2m-1)(m+5)+4