Answer:
15
Step-by-step explanation:
3*5*1=15
If you mean 5^2 and not 5^2i then
5^2 just means 5 times itself,twice or 5 times 5 or 25
if you meant 5^2i
i=√-1
so law of exponents says a^(xz)=(a^x)^z so
5^2i=(5^2)^i or (25)^i
the answer (if you wanted 5^2i) is 25^i
IF YOU MEANT 5^2 then the answer is 25
<h3>The present age of Jackson is 25 years old</h3>
<em><u>Solution:</u></em>
Let the present age of Jackson be "x"
Therefore
Jackson's age 7 years ago = x - 7
And, Jackson's age after 20 years = x + 20
From given question,
Jackson’s age was 2/5 of the age he will be 20 years from now 7 years ago

Thus present age of Jackson is 25 years old