(1/2)*(x(x+8))=280

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Solution for (1/2)*(x(x+8))=280 equation: 



(1/2)(x(x+8))=280

We move all terms to the left:

(1/2)(x(x+8))-(280)=0



Domain of the equation: 2)(x(x+8))!=0

x∈R



We add all the numbers together, and all the variables

(+1/2)(x(x+8))-280=0

We multiply all the terms by the denominator


(+1-280*2)(x(x+8))=0



We calculate terms in parentheses: +(+1-280*2)(x(x+8)), so:

+1-280*2)(x(x+8)

determiningTheFunctionDomain
-280*2)(x(x+8)+1

Wy multiply elements

-560x+1

Back to the equation:

+(-560x+1)



We get rid of parentheses

-560x+1=0

We move all terms containing x to the left, all other terms to the right

-560x=-1

x=-1/-560

x=1/560

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