Question

Ajutatima va rog! Descompuneti in factori:

e) x(3-y)+5(y-3)=

f)2,5a(a-1)-(1-a)=

g)2√2t²-√50t=

Answer 1

e) x(3-y)+5(y-3)=x(3-y)-5(3-y)=
=(3-y)(x-5)=

f)2,5a(a-1)-(1-a)=2,5a(a-1)+(a-1)=
=(2,5a+1)(a-1)=

g)2√(2t²)-√(50t)= 2t√2-5√(2t)      daca t² si t sunt sub radical

2t²√2-5t√2=t√2(2t-5)          daca t² si t nu sunt sub radical