Question

已知X²-3X=1，则3X-11X²+3X+2的值等于多少？

Answer 1

-11X2+6x+2=-11X2+33x-27x+2=-11(X2-3X)-27x+2=-11-27x+2=-27x-9=-9(3x+1)=-9X2
化简之后解答就方便了 !

Answer 2

-11X²+6x+2=-11X²+33x-27x+2=-11(X²-3X)-27x+2=-11-27x+2=-27x-9=-9(3x+1)=-9X²
化简之后解答就方便了

Answer 3

X=-7/4