Question

(iii) (5 - 2m) (3-m) (15 - 7m)​

Answer 1

Step-by-step explanation:

$\huge\underline\blue{Answer}$

$(5-2m)(3-m)(15-7m)$

$=(5(3-m)-2m(3-m))(15-7m)$

$=(15-5m-6m+{2m}^{2})(15-7m)$

$=(15-11m+{2m}^{2})(15-7m)$

$=225-105m-165m+{77m}^{2}+{30m}^{2}-{14m}^{3}$

$=225-270m+{107m}^{2}-{14m}^{3}$

$={14m}^{3}-{107m}^{2}+270m-225$

Hope it help you

Answer 2

Answer:

(15 - 5m-6m+2m^2) (15-7m)

(15-11m+2m^2)(15-7m)

(225-105m-165m+77m^2+30m^2-14m^3)

225-270m+107m^2-14m^3