Question

.Descompuneti numerele: 120, 2700, 142, 525, 118 si 240.
2.Calculati : (2x-5)²=...
(1 pe 3 x+2)²=...
3. Cat inseamna 12², 8², 6², 5²?
Va rog dau 30 de puncte..:)

Answer 1

1.120=2³x3x5
   2700=3³x2²x5²
   142=2x71
   525=5²x7x3
   118=2x59
   240=$2^{4}*3*5$
2.[tex](2x-5) ^{2} =4 x^{2} -20x-25 [/tex]
$( \frac{1}{3} x+2) ^{2} = \frac{ x^{2} }{9} + \frac{4x}{9} +4$
3.144,64,36,25