Question

(3x + 2)² =

(2x + 1)2=

(x + y)2=

( r + 4s ) 2=​

Answer 1

Resposta:

a) 9x²+12x+9. c) x²+2xy+4y².

b) 4x²+4x+1. d) r²+8rs+16s².

Explicação passo-a-passo:

a) (3x+2)²=

(3x)²+2.(3x).(2)+(2)²=

9x²+12x+9

b) (2x+1)²=

(2x)²+2.(2x).(1)+(1)²=

4x²+4x+1

c) (x+y)²=

(x)²+2.(x).(y)+(y)²=

x²+2xy+y²

d) (r+4s)²=

(r)²+2.(r).(4s)+(4s)²=

r²+8rs+16s²