Question

simplify. express your answer using positive exponents.
9y·7y²

Explanation:

Step1: Multiply the coefficients

Multiply 9 and 7. So, \(9\times7 = 63\).

Step2: Multiply the variables with exponents

Using the rule of exponents \(a^m\times a^n=a^{m + n}\), for \(y\times y^{2}\), we have \(y^{1+2}=y^{3}\).

Step3: Combine the results

Combine the coefficient and the variable part. So, \(9y\cdot7y^{2}=63y^{3}\).

Answer:

\(63y^{3}\)