Write each expression using a single exponent.
Xy^5 • x^3 y^7
Can't do with "a single exponent." Each term has its own exponent.
When multiplying terms, you add the exponents.
x^4 * y^12
To write the expression Xy^5 • x^3 y^7 using a single exponent, we need to combine the x and y terms.
When multiplying variables with the same base, we add the exponents. So, for the x terms, we have x^1 (from x) and x^3, which can be written as x^(1+3) = x^4.
Similarly, for the y terms, we have y^5 and y^7, so we can write it as y^(5+7) = y^12.
Combining these results, we get the expression Xy^5 • x^3 y^7 as X x^4 y^12.