Ex 1
a)25(37+63)=25•100=2500
b)32(45-1045)=32•(-1000)= -32000
d)77(77-78)=77•(-1)= -77
e)99(99-98)-98=99•1-98=99-98=1
Ex2
a)7(x+y)
b)5(-x+y)
d)a la puterea 2 ( m+n-x)
e)p(x la puterea 2 + 1 +a)
g)9(-9m la puterea 3 - m la puterea 4 )
h)radical din 3 ( x+y )
j)a(m+n+y)
k)x(1 la puterea 2 - 3 +1 la puterea 3) = x(1-3+1)
m)a(4a-2x+8•a la puterea 2 •x la puterea 2
n)5-x(7+x)
