Question

am nevoie de rezolvari intr-o ora,ma ajuta cineva? Primeste o coroana,va rooog

Answer 1

1)-4x^2; ,2)mg=√(5×20)=10; 3)(2x-√3)^2=4x^2-4√3x+3;;. 4)P=20 =>l=5 => d=5√2;;5) A=6×8/2=24;6) L=10 => l=10/4=2,5 =>A=10×2,5=25. II 2)(9-2x)(9+2x);;b)(a+5)^2;;c)x(4x^2-4x+1)=x(2x-1)^2 3) aplicam th Pitagora AC^2=BC^2-AB^2=25-9=16 => AC=4;; 1)p=(√5+√2)(√5+√2-√2)-√10+10=5+√10-√10+10=15 => p€N