SAT数学题。whichofthefollowingisequivalenttoh(m+1)?g(m),g(m)+1,g(m)-1,h(m)+1,h(m)-1

which of the following is equivalent to h(m+1)?
A: g(m)
B: g(m)+1
C: g(m)-1
D: h(m)+1
E: h(m)-1

你题不全，g和h的定义如下
g(n) =
n^2 + n
h(n) = n^2 - n
答案是A
h(m+1) =(m+1)^2 -(m+1)=m^2+2m+1-m-1=m^2+m=g(m)

还有条件没给吧，g和m的关系

单从等式上看没一个对的