1.

252r^2-630r+252=0Solve quadratic equation​

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Answer:

252r²-630r+252=0

252(r²-2.5r+1)=0

r²-2.5r+1=0

r²-2.0r-0.5r+1=0

r(r-2.0)-0.5(r-2.0)=0

(r-2.0)(r-0.5)=0

r=2 r=0.5



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