Question

Решите неравенство         (3х+2)^2+(4x-3)^2≤(5x-1)^2

Answer 1

Решение:

(9x^+12x+4)*2+(16x^-24x+9)*2<(25x^-10x+1)*2

(18x^+24x+8)+(32x^-48x+18)<(50x^-20x+2)

18x^+24x+8+32x^-48x+18<50x^-20x+2

50x^-24x+26<50x^-20x+2

50x^-24x+26-50x^+20x-2<0          50x^сокращается

-4x+24<0

-4x<0

x>6