Question

Sa se restrângă că pătratul unei sume sau diferente:
a)x la patrat+2x+1; x la patrat+4x+4; x la patrat-6x+9; x la patrat-8x+16.
b)4x la patrat+4x+1; 9x la patrat+6x+1; 16x la patrat -8x+1; 25x la patrat-10x+1.
c)9x la patrat+12x+4; 9x la patrat+24x+16; 25x la patrat-20x+4; 25x la patrat -60x+36.
d)49x la patrat+14x+1; 4x la patrat-28x+49; 25-70x+49x la patrat; 16x la patrat+40x+25

Answer 1

a) (x + 1)² ; (x+2)²; (x-3)²; (x-4)²

b) (2x+1)² ; (3x+1)² ; ( 4x - 1)² ; (5x - 1)²

c) (3x +2)² ; (3x + 4)² ; (5x - 2)² ; (5x - 6)²

d) (7x + 1)² ; (2x - 7)² ; (5 -7x)² ; (4x + 5)²

Answer 2

a) (x+1)^2; (x+2)^2; (x-3)^2; (x-4)^2
b) (2x+1)^2; (3x+4)^2; (4x-2)^2; (5x-1)^2
c) (3x+2)^2; (3x+4)^2; (5x-2)^2; (5x-6)^2
d) (7x+1)^2; (2x-7)^2; (5-7x)^2; (4x+5)^2