Simplify. Write in standard form.

10{a} (- 6a{2} + 2a - 7)

The expression can be simplified as follows:

10a(-6a^2 + 2a - 7)

Distribute the 10a to each term inside the parentheses:

-60a^3 + 20a^2 - 70a

Now arrange the terms in descending order of the variable exponent:

-60a^3 + 20a^2 - 70a

This is the expression in standard form.