Question

(X-5)(x+5)(x+25) mă ajutați. ... plz

Answer 1

$(x-5)(x+5) = x^2-5^2=x^2-25\\\implies (x-5)(x+5)(x+25)=(x^2-25)(x+25)=\\=x^3+25x^2-25x-625$

Answer 2

folosim formula (a-b)(a+b)=$x^{2} - x[tex]= (x^{2} -25)(x+25)= x^{3} +25 x^{2} -25x-625$^{2} [/tex]