Question

simplify and solve plz plz​

Answer 1

Answer:

simplify

5^x+2 - 4 * 5^x/21*5^x

we can write 5^x+2 as

5^x * 5^2

so we can take 5^x as the common term

5^x(5^2 - 4) / 21*5^x

5^x(21)/21*5^x

hence u can divide them

the answer is 1

solve

2^x + 2^x/2^2=5

(4*2^x+ 2^x)/4=5

2^x(4+1)=20

2^x(5)=20

2^x=20/5

2^x=4

x=2