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JozelynW
 one year ago
If the question says insert x=5 into the equation 4^x how would you do that? Would you say that 2 negatives equal a positive or just input 5
JozelynW
 one year ago
If the question says insert x=5 into the equation 4^x how would you do that? Would you say that 2 negatives equal a positive or just input 5

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you would replace x with 5 so 4^(x) = 4^((5)) the two negatives cancel to form a positive which is why 4^((5)) = 4^5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah, it equal to positive

JozelynW
 one year ago
Best ResponseYou've already chosen the best response.0ok thank you i was just confused

JozelynW
 one year ago
Best ResponseYou've already chosen the best response.0what if its a positive number then?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2like if x = 9 ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2if x = 9, then, \[\LARGE 4^{x} = 4^{9} = \frac{1}{4^9}\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2the negative exponent tells us to take the reciprocal of the base to make the exponent positive \[\LARGE x^{k} = \frac{1}{x^k}\]

JozelynW
 one year ago
Best ResponseYou've already chosen the best response.0so for 2^x+3 what would x=3 be then

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2\[\Large 2^x+3\] or \[\Large 2^{x+3}\] ??

JozelynW
 one year ago
Best ResponseYou've already chosen the best response.0i think the answer would be 64

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2\[\Large 2^{x+3} = 2^{3+3} = 2^6 = 64\] I agree

JozelynW
 one year ago
Best ResponseYou've already chosen the best response.0Ok thanks so much, I'm going to need more help later thou.
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