anonymous one year ago Find the product 7n^4 * 2n^5

1. Nnesha

when you mulitplyc same bases you should add their exponents exxample $\huge\rm x^m \times x^n = x^{m+n}$

2. anonymous

i mean 14^9

3. Nnesha

9? to the 9 power ? multiply coefficient (7 times 2)(n^4 times x^5)

4. Nnesha

14 is not to the 9 power the variable is to the 9 poawer

5. anonymous

i am still so confused

6. anonymous

so like 14^20

7. Nnesha

nope 9 is right bec you have to add exponents so n^9 not 14^9

8. anonymous

okay so it would be 14n^9

9. Nnesha

$\huge\rm (7 \times 2)(n^4 \times n^5)=(7 \times 2) n^{4+5}$

10. Nnesha

yes that's right

11. anonymous

5xy^5 * -3x^4y^3 how would that one be set up to find the product

12. Nnesha

* <--is that a multiplicationz sign ?

13. anonymous

yea

14. Nnesha

that's same like we just did multiply coefficients and add exponents of variables

15. Nnesha

x is same as x to the one power x=x^1

16. anonymous

so it would be like -15^xy13? or -15x^5y8

17. anonymous

-15x^5y^8 i wrote that wrong

18. Nnesha

add coefficient of same variables you can't add 3 exponent of y with 5 exponent of x x^{1+4}

19. Nnesha

so which one is correct ?

20. anonymous

so it would be -15x^5y^8

21. anonymous

thank you it was right

22. Nnesha

np :=)