Question 427067
In order to multiply, multiply the coefficients first and then the variables separately. Remember that x^n*x^m=x^(n+m) or if the bases are the same, add the exponents to multiply.
For this problem, the coefficients are -2 and -5. If we multiply, we get 10.
Next let's work with the variable c. c^2*c^3=c^5.  Remember to add the exponents, 2+3=5
let's work with the last variable now, a. a*a^4=a^5.
If a variable does not have an exponent, the exponent is 1. So if we add the exponents, we get 5.  1+4=5 
For the final answer, put all this information together, and we get
10c^5a^5&#58373;