Question

Rezolvati  urmatoarele ecuatii:

a) (x+2)(x+3)-5(x+1)=(x-1)la puterea a 2 + 6
b) 3(x+5)-(2x-1) la puterea a 2 - 13=5(1-x)(1+x)+(x-3) la puterea a doua

Answer 1

a) (x²-6)-5x-5=x²+1+6 5x³+30x-5x--5=x²+1+6 5x³+30x-5x-x²=1+6+5 30x=12 x=30:12 x=2,5