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- quickstudent

Can someone please help me?
I need help with the guess and check factoring method.

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- quickstudent

Can someone please help me?
I need help with the guess and check factoring method.

- schrodinger

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- quickstudent

- quickstudent

I just looked at the first question, and I don't get how to do it at all :(

- anonymous

let me review it and i will give you the answer ok @quickstudent

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- anonymous

I'll use x as the width and * as multiply to save confusion.
A = x^2+12x
A = width * length = x * l
As both equations are equal to area, we can equal them to each other:
x * l = x^2+12x
Factorise the right hand side. x is common so we can factorise it taking x out of the bracket giving:
x * l = x (x +12)
Since we have an x multiplied by something on both sides, we can divide everything by x to give us:
l = x+12
x = 10 feet
l = x +12
= 10 + 12
= 22 feet
A = x^2+12x
= (10)^2 + 12(10)
= 100 + 120
= 220 feet^2
or
A = w * l
= 10 * 22
= 220 feet^2
Hope this helps! :D @quickstudent

- quickstudent

Hmmm, well I still don't understand how you used the guess and check method here.

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