Question

Calcule : ( 4a + 2 ) ²
Calcule : ( x + 5 ) ²
Calcule : ( 3x + y ) . ( 3x + y )




Pelo Amor de Jesus Cristo me ajude !!! ♥

Answer 1

$(4a + 2)^{2} = ( 4a)^{2} + 2.4a.2 + 2^{2} =16 a^{2} + 16a + 4;$, $(x + 5)^{2} = ( x)^{2} + 2.x.5 + 5^{2} =x^{2} + 10x + 25;$, $(3x + y)^{2} = ( 3x)^{2} + 2.3x.y + y^{2} =9x^{2} + 6xy + y^{2} ;$