Răspunsuri

2014-04-26T19:17:16+03:00

P=x+2x+2+2x+3=5x+5=5(x+1)

A=[x*(2x+2)]/2⇒A=(2x²+2x)/2⇒A=2(x²+x)/2⇒A=x²+x

2014-04-26T19:17:19+03:00