Question

por favor resolvao

 

efetue os produtos notaveis

resolvao por favor

                    2

(a)  (3+4a)

 

                  2

(b) (x-10)

 

                2

(c) (3t-7)

 

                  2

(d) (4-5a)

Answer 1

 

Olá Matheus!!!!

$a) (3+4a)^{2}\\ \\ ( )^{2}+2.( )( )+( )^{2} \\ \\ ( 3 )^{2}+2.( 3 )( 4a )+( 4a )^{2} \\ \\ 3^{2}+2.3. 4a+ 16.a^{2} \\ \\ \boxed{9+24.a+ 16a^{2}} \\ \\ \\ b)(x-10)^{2}\\ \\ ( )^{2}+2.( )( )+( )^{2} \\ \\ ( x )^{2}+2.( x )( -10 )+( -10 )^{2} \\ \\ x^{2}+2.x. (-10)+ (-10)^{2} \\ \\ \boxed{x^{2}-20.x+ 100 }\\ \\ \\ c)(3t-7)^{2}\\ \\ ( 3t )^{2}+2.( 3t )( -7 )+( -7 )^{2} \\ \\ ( 3t )^{2}+2.(3t )( -7 )+( -7 )^{2} \\ \\ 9t^{2}-42.t + 49 \\ \\ \boxed{9t^{2}+42t+ 49}$

 

Opa..... faltou uma...

 

$d)(4-5a)^{2}\\ \\ ( 4 )^{2}+2.( 4 )( -5a )+( -5a )^{2} \\ \\ ( 4 )^{2}+2.(4 )( -5a )+( -5a )^{2} \\ \\ 16-40a + 25a^{2}\\ \\ \boxed{16+40a+ 25a^{2}}$

 

veja se entendeu!!!