Answer:
f(-5) = 30
Explanation:
When given a function such as: f(x)=x²-x
"f(-5)" means the value of that function when x = -5
f(x)=x²-x
f(-5)=(-5)²-(-5) [for x=-5]
f(-5)=25-(-5)
f(-5)=25+5
f(-5)=30
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