Odpowiedź :
Odpowiedź:
Szczegółowe wyjaśnienie:
(4m-1)(3m+5)=
=12m^2+20m-3m-5=
=12m^2+17m-5
(3x+1)(3x+5)=
=9x^2+15x+3+5=
=9x^2+18x+5=
(-3+a)(a-5)=
=-3a+15+a^2-5a=
=a^2-8a+15
(6-p)(4-3p)=
=24-18p-4p+3p^2=
=3p^2-22p+24
(a+3b)(3x+5)=
=3ax+5a+9bx+15b
Odpowiedź:
Szczegółowe wyjaśnienie:
(4m-1)(3m+5)=
=12m^2+20m-3m-5=
=12m^2+17m-5
(3x+1)(3x+5)=
=9x^2+15x+3+5=
=9x^2+18x+5=
(-3+a)(a-5)=
=-3a+15+a^2-5a=
=a^2-8a+15
(6-p)(4-3p)=
=24-18p-4p+3p^2=
=3p^2-22p+24
(a+3b)(3x+5)=
=3ax+5a+9bx+15b