Question

-Efetue:
1- (x+2y)^2 + (2x-y)^2=
2-(2a-3b)^2 - (a-5b) (a+2b)=
3- 2(m-2)^2 - 3 (m+1) (m-4)=
4-( m - 5y +2)^2 - ( m+5y-2)^2=
5-(á +b+c)^2 - (a^2 + b^2+ c^2)=
6-(3m^2 - 2p )^3 - ( 2m^2 - 3p)^3=

Answer 1

1) (x+2y)²+(2x-y)²
x²+4xy+4y²+4x²-4xy+y²
5x²+5y²
    
6)(3m²-2p)³-(2m²-3p)³
3m^6-2p³-(2m^6-3p³)
3m^6-2p³-2m^6+3p³
m^6+p³