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that's the subtraction sign
Factoring Quadratic Equations.
U use the FOIL method to factor trinomials into binomial that would then allow you to find the solutions to the problem
Answer:
see below
Step-by-step explanation:
an = 43 - 5(n-1)
Let n=1
a1 = 43 - 5(1-1) = 43 -5(0) = 43
a2 = 43 - 5(2-1) = 43 -5(1) = 38
a3 = 43 - 5(3-1) = 43 -5(2) = 33
a4 = 43 - 5(4-1) = 43 -5(3) = 28
That's weird. There is no error!