Question

plz plz answer my questions first
( exponential equations)
plz answer my questions step by step don't answer my questions direct
plz answer my questions first.​

Answer 1

Answer:

3) x=3

4) y=1/3

5)y=2

hope you got your answer

Answer 2

Answer:

3) 3

4) 1/3

5) 2

Step-by-step explanation:

$(3) \\ = > {2}^{x} - 8 = 0 \\ \\ = > {2}^{x} = {2}^{3} \\ \\ = > x = 3 \\ \\ \\ \\ (4) \\ = > {3}^{y} = \sqrt[3]{3} \\ \\ = > {3}^{y} = {3}^{ \frac{1}{3} } \\ \\ = > y = \frac{1}{3} \\ \\ \\ \\ (5) \\ = > \frac{1}{ {7}^{ - y} } = 49 \\ \\ = > {7}^{y} = 49 \\ \\ = > {7}^{y} = {7}^{2} \\ \\ = > y = 2 \\ \\ \\ \\ formulae \\if \: {a}^{x} = {a}^{y} \\ = > x = y \\ \\ {a}^{x} = \frac{1}{ {a}^{ - x} }$

HOPE IT HELPS