Question

1. sum: $77yx^{2}+11xy$

product: ____________

Explanation:

Step1: Find the sum

The sum is already given as $77yx^{2}+11xy$.

Step2: Find the product

Multiply the two terms: $(77yx^{2})\times(11xy)$.
Using the rule of exponents $a^{m}\times a^{n}=a^{m + n}$ and multiplying the coefficients, we have $(77\times11)x^{2 + 1}y^{1+1}=847x^{3}y^{2}$.

Answer:

Sum: $77yx^{2}+11xy$
Product: $847x^{3}y^{2}$