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Find the area of the walkway.

 

 Jul 7, 2020
 #1
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It appears to me that several values for x would work in number 1.  I don't know how to solve it.  Sorry. 

 

2.   Factor fully by grouping:   5x2 + 15x +4x + 12  

 

I'm not sure what "by grouping" means, but I can factor the quadratic for you.  

 

First add 15x and 4x                5x2 + 19x + 12  

 

This will factor to                      (5x + 4)(x + 3) 

.    

 Jul 8, 2020
 #2
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-1

deleted///////cheeky

 Jul 8, 2020
edited by Dragan  Jul 8, 2020
 #4
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On what basis do you say that 2x + 7 = 0 ? 

And if it were accurate, then x would equal –3.5 not +3.5. 

If you can't explain those, then I have to call bogus on this one. 

.

Guest Jul 8, 2020
 #5
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I was using this equation to find an x; and, it worked. smiley

Guest Jul 8, 2020
 #6
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It didn't work; it was wrong!!!!cheeky

Dragan  Jul 8, 2020
 #3
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+1

I think we need the dimensions of the pool ....or the value of 'x' to calculate this

  without these ,   the answer I get is   

   area = 16x^2+8x

 Jul 8, 2020

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