Question

3x-2/2-x+4x的平方/x的平方-4

Answer 1

(3x-2)/(2-x) + 4x的平方/(x的平方-4)

=(-3x+2)/(x-2) + 4x²/[(x+2)(x-2)]

=[(-3x+2)(x+2) + 4x²]/[(x+2)(x-2)]

=(-3x²-4x+4 + 4x²）/[(x+2)(x-2)]

=(x²-4x+4）/[(x+2)(x-2)]

=(x-2)²/[(x+2)(x-2)]

=(x-2)/(x+2)