Final answer:
To calculate (8 x 10³)² in standard index form, first evaluate the expression inside the parentheses to get 80,000. Then raise this value to the power of 2 to get 6,400,000,000. This can be expressed as 6.4 x 10^9 in standard index form.
Step-by-step explanation:
To calculate (8 x 10³)² in standard index form, we first evaluate the expression inside the parentheses, which results in 80,000. Then, we raise this value to the power of 2, giving us 6,400,000,000. To express this in standard index form, we can write it as 6.4 x 10^9.
Learn more about Calculating expressions in standard index form