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x=(2.5)+1/2(-9.8)(2.5)^2
We move all terms to the left:
x-((2.5)+1/2(-9.8)(2.5)^2)=0
We multiply parentheses ..
x-((2.5)+1/2(-24.5)^2)=0
We multiply all the terms by the denominator
x*2(-24.5)^2)-((2.5)+1=0
Wy multiply elements
2x^2(-+1=0
We use the square of the difference formula
2x^2(-1=0
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