Разложите на множители а^2-16b^2= 25-9c^2= 36p^2-121m^2= - вопрос №2162259236212129248679827 от maksimka39 22.12.2020 03:46

Question

Алгебра: Разложите на множители а^2-16b^2= 25-9c^2= 36p^2-121m^2= -9^2+4b^2= 0,09x^2y^2+1=

maksimka39 · Answer

А^2-16b^2=a^2-(4b)^2=(a-4b)(a+4b)25-9c^2=5^2-(3c)^2=(5-3c)(5+3c)36p^2-121m^2=(6p)^2-(11m)^2=(6p-11m)(6p+11m)-9^2+4b^2=(2b)^2-9^2=(2b-9)(2b+9)0,09x^2y^2-1=(0.3xy)^2-1^2=(0.3xy-1)(0.3xy+1)...