Question

simplify, express your answer using positive exponents.
(9y²z)(9yz)

Explanation:

Step1: Multiply the coefficients

$9 \times 9 = 81$

Step2: Combine $y$ terms (add exponents)

$y^2 \times y = y^{2+1} = y^3$

Step3: Combine $z$ terms (add exponents)

$z \times z = z^{1+1} = z^2$

Step4: Combine all simplified terms

$81 \times y^3 \times z^2$

Answer:

$81y^3z^2$