Question

5 mũ 2x-3 -25 mũ 2= 5 mũ 2.3

Answer 1

\(5^{2x-3}-25^2=5^{2.3}\)

\(5^{2x-3}-\left(5^2\right)^2=5^6\)

\(5^{2x-3}-5^4=5^6\)

-> 2x - 3 - 4 = 6

2x - 3 = 4 + 6

2x - 3 = 10

2x = 10 + 3

2x = 13

x = \(\frac{13}{2}\)

Answer 2

\(\frac{13}{2}=6,5\)nha

Answer 3

\(5^{2x}-3-25^2=3.5^2\)

\(25^x-25^2=3\left(5^2+1\right)\)

\(\Leftrightarrow25^x=78\)

Vậy........

Answer 4

5^2x-3 - 125=5⁶ suy ra 5^2x-3=