5 × 2x+1/3 - x-3/9 = x+2/6 + 3x-1/3 10x+3/9 - x-3/9 = 4x+2/6 -2/6 5x =0 x=0 2x + 3 - 2x + 3/2 - 2x + 3/3 = 2x +3 /6 + 3  + 3/2 - 2x + 1 = 2x +1 /2 4+3/2-1/2=4x (8+3-1)/2=4x 10/2=4x x=5/4 x√2 =2 x=2/√2=√2 x√7 + 3√5 = 3√7 + x√5 x√7 - x√5 = 3√7 - 3√5 x(√7 - √5) = 3(√7 - √5) x=3 ( x + √3)² - ( x + √3) ( x-√3) = 0  x²+2x√3 + 3 -  x² - 3 = 0 2x√3  = 0 x=0 x√2 + 1 = x+√2 x√2-x = √2-1 x(√2-1)= √2-1 x=1 √3(x-1) - √5(x+2)= x-3√3 +2 x√3-√3 - x√5-2√5= x-3√3 +2 x√3 - x√5-x=-3√3 +2+√3+2√5 x(√3 -√5-1)=-2√3 +2+2√5 x(√3 -√5-1)=-2(√3 -√5-1) x=-2 2( 3x-1) - 3( x+ √3) = √3(2-3x) -7 6x-2 - 3x-3√3 = 2√3-3√3x -7 3x +3√3x = 2√3 -7+2+3√3 3x +3√3x = 5√3 -5 3x(1+√3)=-5(1-√3) x=-5(1-√3)/3(1+√3) (x+1)² - (x-1)²= (2x+1)² - 4x² x²+2x+1 - x²+2x-1= 4x²+4x+1 - 4x² +1 -1≠ +1   multime vida (x+1)² + (x+2) ² + (x+3) ² + (x+4)²= (2x+4)² x²+2x+1 + x²+4x+4  + x²+6x+9  +x²+8x+16 = 4x²+16x+16 20x+14 =16x 4x=-14 x=-7/2