Question

if 2^x+5=4^x-1 then X is equal to
a.4
b.7
c.3/2
d. 6
please give answer with explanation
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Answer 1

Answer:

4x - 2x= 5 +1

=> 2x=6

=>x=6/2

=>x=3/2

Answer 2

Answer:

7

Step-by-step explanation:

${2}^{x + 5} = {4}^{x - 1}$

${2}^{x + 5} = {( {2}^{2} )}^{x - 1}$

${2}^{x + 5} = {2}^{2(x - 1)}$

${2}^{x + 5} = {2}^{2x - 2}$

$x + 5 = 2x - 2$

$x = 7$