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8x^2-230x+750=0 by completing the square |
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Answer» Here's the answer: =>2(4x^2-115x+375)=0 =>(2x)^2 - 2 × 2x × 115/4 +(115/4)^2 - (115/4)^2 + 375=0 =>(2x-115/4)^2 - 13225/16 +375=0 =>(2x-115/4)^2 - 13225+6000/16=0 =>(2x-115/4)^2 -7225/16=0 =>(2x-115/4)^2=7225/16 =>2x-115/4=√7225/16 =>2x=85/4+115/4 =>2x=200/4 =>2x=50 =>x=25 Hope it helps :) |
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