2道数学题，很简单，快

(1)x=2^3 =8
(2)展开得：x^2-x-6-2x^2+8x-3x+12=6-x^2
4x=0
x=0

(1)x=2^8/2^5=2^(8-5)=2^3=8
(2)化简，x^2-x-6-(2x^2-5x-12)=6-x^2

x^2-2x^2+x^2-x+5x-6+12-6=0
4x=0
x=0

（1）2^5 * x=2^8，则x=

（2）需过程，解方程：（x+2)(x-3）-（x-4）(2x+3）=6-x^2

?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

(1)8

(2)X^2-x-6-2x^2+5x+12=6-x^2
4x=0
x=0