Question

Выполните действие:
(3x-5)*(2x+9)
(m+1)*(m2-m+3)
(t+m)^2
(t-3)^2
(2t+1)^2
(3m-2t)^
(3m^2+t^3)^2
(x-5)*(x+5)
(7c+3)*(7c-3)
(4x-9y)*(4x+9y)
(a^2-2b)*(a^2+2b)

Answer 1

(3х-5)(2х+9)= 3х*2х+3х*9-5*2х-5*9=6х^2+27х-10х-45=6х^2+17х-45
(m+10)(2m-m+3)= 2m^2-m^2+3m+20m-10m+30=m^2+13m+30
(t+m)(t+m)= t^2+tm+tm+m^2=t^2+2tm+m^2
(t-3)(t-3)=t^2-3t-3t+9=t^2-6t=9
(2t+1)(2t+1)=4t^2+2t+2t+1=4t^2+4t+1
(3m-2t)(3m-2t)=9m^2-6tm-6tm+4t^2=9m^2-12tm+4t^2
(x-5)(x+5)=x^2+5x-5x-25=x^2-25
(7c+3)(7c-3)=49c^2-21c+21c-9=49c^2-9
(4x-9y)(4x+9y)=16x^2+36xy-36xy-81y^2=16x^2-81y^2
(a^2-2b)(a^2+2b)=a^4+2a^2b-2a^2b-4b^2=a^4-4b^2
(3m^2+t^3)(3m^2+t^3)= 9m^4+3m^2t^3+3m^2t^3+t^6