Question

| | 43. If x=3+33 +33, thеn thе vаluе оf x3 - 9х2 + 18х - 6 - 1) 12 2) 8 3) 6 4) 4 С C 1 О 2 О O 3 О 4​

Answer 1

→bx=3+3⅓+3⅔

or,(x−3)=3⅓+3⅔

Therefore,

(x−3)3=(3⅓+3⅔)3

or,x3−27−9x2+27x=3+9+3×3(3⅓+3⅔)

or,x3−27−9x2+27x=12+9(x−3)[Puttingthevalue(x−3)=(3⅓+3⅔)]

or,x3−27−9x2+27x=12+9x−27