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Please help asap!

 Sep 11, 2018
 #1
avatar+4249 
+2

13. When you have a negative sign before the parenthesis, the signs change in inside!

 

So, the answer is -14x^4+5x^3+6, after the calculations!

 

Use the same method for 14!

smileysmiley

 Sep 11, 2018
 #2
avatar+2448 
+1

Ty but I still don't really understand >.<

RainbowPanda  Sep 11, 2018
 #3
avatar+4249 
+2

13. \((8x^3-6x^4+3)-(3x^3-3+8x^4)= 8x^3-6x^4+3-3x^3+3-8x^4\)\(=-14x^4+5x^3+3+3=-14x^4+5x^3+6.\)

 

Remember! When you have a negative sign before the parenthesis, the signs change in inside!

 Sep 11, 2018

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