91Ó°ÊÓ

Write a polynomial of degree 5 that has three terms.

Write an example that illustrates a property of powers. Then use multiplication or division to explain why it is true.

Simplify$2p^{2}q(5pq−3p^3{q}^2+4p{q}^4)$ .

Simplify${\left(\frac{1}{w^4{z}^2}\right)}^3$ assuming that no variable equal to 0 .

Simplify$(y−10)(y+7)$ .

Simplify${\left(\frac{cd}{3}\right)}^{−2}$ assuming that no variable equal to 0 .

Simplify${\left(\frac{−6x^6}{3x^3}\right)}^{−2}$ assuming that no variable equal to 0 .

Simplify$(x+6)(x+3)$ .

Express the number$421,000$ in scientific notation.

Simplify$(2z−1)(2z+1)$ .