Question

efetue os produtos notaveis: 2 a) (a+3) 2 b) (x+8) 2 c) (x+2y)

Answer 1

Olá Matheus!!!!

$<var>a) (a+3)^{2}\\ \\ ( )^{2}+2.( )( )+( )^{2} \\ \\ ( a )^{2}+2.( a )( 3 )+( 3 )^{2} \\ \\ a^{2}+2.a. 3+ 3^{2} \\ \\ \boxed{a^{2}+6.a+ 9} \\ \\ \\ b)(a+8)^{2}\\ \\ ( )^{2}+2.( )( )+( )^{2} \\ \\ ( x )^{2}+2.( x )( 8 )+( 8 )^{2} \\ \\ x^{2}+2.x. 8+ 8^{2} \\ \\ \boxed{x^{2}+16.x+ 64 }\\ \\ \\ c)(x+2y)^{2}\\ \\ ( x )^{2}+2.( x )( 2y )+( 2y )^{2} \\ \\ ( x )^{2}+2.( x )( 2y )+( 2y )^{2} \\ \\ x^{2}+2.x. 2y+ 4.y^{2} \\ \\ \boxed{x^{2}+4.x.y+ 4y^{2}}\\ \\</var>$

 

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