Question

What is the simplified form of the following expression?

Answer 1

Answer:

$-4x^1^6$

Step-by-step explanation:

To simplify, multiply the coefficients of the terms and add the exponents of the same variable together. So, multiply 2 and -2 together, and add the exponents 7 and 9 together while keeping the variable of x:  

$-2x^7$ · $2x^9$

$=-4x^7^+^9\\=-4x^1^6$

Thus, the answer is $-4x^1^6$.