Answer:
4(3 + 2x)(-3 + 2x)
4^(x-5)=64
Convert 64 to base 4
4^{x-5}=4^3
x=8
7,2 and 8,5
Step-by-step explanation:
f(x) = 500(2)^x
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when you divide powers with the same base, you can just subtract the exponents