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Maurinko [17]
3 years ago
11

Simplify 3(3x-1)^2=21

Mathematics
2 answers:
GuDViN [60]3 years ago
5 0
27x^2-3=21
27x^2=24

the answer is 27x^s=24
that is my work up there
scoray [572]3 years ago
4 0
3(3x-1)^2=21 

(3x-1)^2 = 7 

3x-1 = square root of 7 

3x = square root of 7 - 1 

x = (square root of 7 - 1)/3
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2
IgorC [24]

Answer:

L= 10 in

W= 7 in

Step-by-step explanation:

Given data

let the widht be x

W= x

L= x+3

P=34 in

We know that

P=2L+2W

34= 2(x+3)+ 2(x)

34= 2x+6+2x

collect like terms

34= 4x+6

34-6= 4x

28= 4x

divide both sides by 4

x= 28/4

x=7

Put x= 7 in

L= x+3

L= 7+3= 10

Hence the width is 7in the length is 10 in

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