Question

va rog , exercițiul 5❗​

Answer 1

Răspuns:

a) 1+2a+a^2+4+4a+a^2+9+18a+a^2= 14+24a+3a^2

) x^2-4xy+4y^2+x^2-4y^2= 2x^2+4xy

c) 9x^2-12x+4+10x^2-15x= 19x^2-27x+4

d) 9x^2+6xy+y^2+x^2-xy-xy+y^2=10x^2+4xy+2y^2

e) 1-6y+9y^2+1+6y+9y^2-18y^2=2

f) a^4+2a^2b^2+b^4-a^4+2a^2b^2-b^2=4a^2b^2