Question

Exercitiul 1 va rogg multt a,b,c,d,e

Answer 1

a) 16x-2y-15y+20x = 36x-17y

b) 14x²-21+24-4x² = 10x²+3

c) 5x(x+4)-(x+4)-3x²+9 = 5x²+20x-x-4-3x²+9 = 2x²+19x+5

d) 7(x+2)-x(x+2)-3x(4-x)-(4-x) = 7x+14-x²-2x-12x+3x²-4+x = 2x²-6x+10

e) (2x³-8x³) : x² = -6x³ : x² = -6x