Question

{X+2}²- {X+1}² +5=2{X-3}+{X+3}-2 ..................REZOLVATIA A?

Answer 1

(x+2)²-(x+1)²+5=2(x-3)+x+3-2
(x+2)²-(x+1)²+5=2(x-3)+x+3-2
(x+2)²-(x+1)+5=2(x-3)+x+1
(x+2)²-(x+1)²+5=2x-2×3+x+1
(x+2)²-(x+1)²+5=2x-6+x+1
(x+2)²-(x+1)²+5=2x-5+x
(x+2)²-(x+1)+5=3x-5
x²+2x×2+2²-(x+1)²+5=3x-5
x²+4x+2²-(x+1)²+5=3x-5
x²+4x+4-(x+1)²+5=3x-5
x²+4x+9-(x+1)²-3x-5
x²+4x+9-(x+1)²-3x=-5
x²+x+9-(x+1)²=-5
x²+x-(x+1)²=-5-9
x²+x-(x+1)²=-14