# Algebra

posted by
**Joe**
.

Can someone check my work please?

Write using positive exponents, and simplify if possible.

1. (–3x)^–2

answer: 1/9x^2

2. Multiply. Write the answer in scientific notation.

posted by
**Joe**
.

Can someone check my work please?

Write using positive exponents, and simplify if possible.

1. (–3x)^–2

answer: 1/9x^2

2. Multiply. Write the answer in scientific notation.