1. Rewrite the denominator so both fractions are in terms of $2h-1$.
Since 1−2h=−(2h−1),
(1−2h)2=(2h−1)2.
So
(1−2h)23+2h−18=(2h−1)23+2h−18.
2. Express both terms over the common denominator $(2h-1)^2$.
(2h−1)23+2h−18=(2h−1)23+(2h−1)28(2h−1).3. Combine the numerators and simplify.
(2h−1)23+(2h−1)28(2h−1)=(2h−1)23+8(2h−1)
=(2h−1)23+16h−8=(2h−1)216h−5.答案(2h−1)216h−5