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(3x+4)^2

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Vivian L. | Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACHMicrosoft Word/Excel/Outlook, essay comp...
3.0 3.0 (1 lesson ratings) (1)
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Hi Again Craig;
(3x+4)2
This is...
(3x+4)(3x+4)
We are going to FOIL...
FIRST...(3x)(3x)=9x2
OUTER...(3x)(4)=12x
INNER...(4)(3x)=12x
LAST...(4)(4)=16
 
9x2+12x+12x+16
9x2+24x+16
Ian T. | Patient, highly qualified, effective tutor with that gets resultsPatient, highly qualified, effective tut...
5.0 5.0 (17 lesson ratings) (17)
1
(3 x+4)^2 = (3 x+4)(3 x+4)
 Using the foil rule
 
ind the product: (3x + 4)(3x +4)
Use FOIL:
F: 3 x*3 x=9 x^2
O: 3x*4 = 12x
I: 4*3 x = 12 x
L: 4*4 = 16
Combine these products to get:
19 x^2+24 x +16