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b+ b - 20

 

Answer= (b+_)(b+_)

Thanks!

Guest Jun 6, 2017

Best Answer 

 #1
avatar+4694 
+1

b2 + b - 20

 

What two numbers add up to  1  and mulitply to  - 20  ?  →  -4  and  +5

-4 + 5 = 1

-4 * 5 = -20

 

So.....

b2 + b - 20    =    (b - 4)(b + 5)

hectictar  Jun 6, 2017
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1+0 Answers

 #1
avatar+4694 
+1
Best Answer

b2 + b - 20

 

What two numbers add up to  1  and mulitply to  - 20  ?  →  -4  and  +5

-4 + 5 = 1

-4 * 5 = -20

 

So.....

b2 + b - 20    =    (b - 4)(b + 5)

hectictar  Jun 6, 2017

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