(14 - х) (14 + х) + (х + 6)2 при х=1,5.

(14-x)(14+x)+(x+6)²=14²-x²+x²+12x+36= =196+12x+36=12x+232 x=1,5: 12.1,5+232=12.3/2+232=18+232=250