Question

数学题 解不等式 2(3x-2)(x-3)-(6x+5)(x-1)>1

Answer 1

2(3x-2)(x-3)-(6x+5)(x-1)>1

(6x^2-22x+12)-(6x^2-x-5)>1

-21x+17>1

x＜16/21

5x=8y=5k+2,

x=k+2/5

y=5k/8+1/4

4x+6y=3k+5

4k+8/5+30k/8+6/4=3k+5

k=2/5

4k-14=8/5-14=-12.4

-1+(5/13)^2010*(-5/13)^2009=-1+(5/13)^(2010-2009)=-1+5/13=-8/13