Answer:
[tex]\sf 1.7 *10^4[/tex]
Step-by-step explanation:
[tex]\sf 2*10^4 - (3*10^3) = 20 * 10^3 - (3*10^3)[/tex]
Now, 10³ is common in both terms and so we can take out.
[tex]\s = (20 -3)*10^3\\\= 17 * 10^3[/tex]
Now, again write in scientific notation.
= 1.7 * 10 * 10³
Use Exponent law,
[tex]\boxed{\sf a^m * a^n = a^{m+n}}[/tex]
[tex]= 1.7*10^4[/tex]
