Question

(-1)的5次方x{[-4又2/3除以(-2)的2次方+(-1.25)x(-0.4)]除以(-1/9)-3的二次方}

Answer 1

(-1)的5次方x{[-4又2/3除以(-2)的2次方+(-1.25)x(-0.4)]除以(-1/9)-3的二次方}

=-1x{[(-14/3)/4+0.5]x(-9)-9}

=-1x{-2/3x(-9)-9}

=-1x{-3}

=3