+0  
 
+1
109
2
avatar+2297 

Really need to get this done >.<

 Sep 10, 2018
 #1
avatar+3738 
+2

Hi, RP!

1. Subtracting -3n^2 from -7n^2, we get: \(-7n^2-(-3n^2)=-7n^2+3n^2=4n^2.\)

 

2. \((-8x^4y^3)*(2x^5y^2)+7x^9y^5\) , we can remove the parenthesis, then multiply, then add, to attain: \(-16x^9y^5+7x^9y^5=-9x^9y^5\).

 

3. Again: \((-4a^3b^2)^2*(3a^2b)=16a^6b^4*3a^2b=48a^8b^5.\)

 

4. \(5c^{-7}d^2*(-cd^2)^4\) , simplify, apply the exponent rule, and finally: \(\frac{5d^{10}}{c^3}\) . This might be wrong!!!!

 

5. \(\frac{18w^4x^9}{14w^5x^5}\), division, subtract powers! So, \(\frac{18x^4}{14w}\). Reduce it, to \(\frac{9x^4}{7w}.\)

 

6. \(\frac{15x^2y*-6x^7y}{(3xy)^2}\), remove parenthesis and simplify to get: \(-10x^7\) .

 

Answers:

1. \(4n^2\)

2. \(-9x^9y^5\)

3. \(48a^8b^5\)

4. \(\frac{5d^{10}}{c^3}\)

5. \(\frac{9x^4}{7w}\)

6. \(-10x^7\)

smileysmiley

.
 Sep 10, 2018
 #2
avatar+2297 
0

Thank you SO much!

RainbowPanda  Sep 10, 2018

8 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.