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Which equations are correct?

Select each correct answer.

 

−4b^3(5b^2+3)=−20b^6−12b^3

−6y^4(4y^2+2)=−24y^8−12y^4

−4x^2(2x^2+5)=−8x^4−20x^2

−5a^4(2a^2+4)=−10a^6−20a^4

 

 

Which polynomial represents the area of the rectangle? http://prntscr.com/ku2v2m

 

2x2−9x−10

2x2−x−10

2x2+x−10

2x2−10

Guest Sep 13, 2018
 #1
avatar+142 
+2

Answer to

 

Which polynomial represents the area of the rectangle? http://prntscr.com/ku2v2m

 

2x2−9x−10

2x2−x−10

2x2+x−10

2x2−10

 

(2x+5)(x-2)=2x^2+x-10.

DanielCai  Sep 13, 2018
 #2
avatar+91297 
+1

 

−4x^2(2x^2+5)=−8x^4−20x^2

And

−5a^4(2a^2+4)=−10a^6−20a^4

 

Are correct

 

cool cool cool

CPhill  Sep 13, 2018

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