Question

Folosind formula (a+b+c)la a 2= a la a doua + b la a doua + c la a doua + 2ab + 2bc + 2ca, efectuati:
d) (1+2a-3b)la a doua
e) (2x-y+1) la a doua
f) (2m-n-3p) la a doua

Answer 1

d)1+4a^2+9b^2+4a-6b-12ab,e)4x^2+y^2+1-4xy+4x-2y,f)4m^2+n^2+9p^2-4mn-12mp+6np