amorfide
  • amorfide
I need a step by step for how to complete the square on this question -4x^2 -8x +5
OCW Scholar - Single Variable Calculus
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Step 1: -4(x^2+2x)+5 ; grouping by common factor of -4 Step 2: -4(x^2+2x+1-1)+5 ; add and subtract by 1 for preparing sqaure Step 3 : -4(x^2+2x+1)+4+5 ; remove useless terms in the bracket for making a sqare Step 4 : -4(x+1)^2+9
anonymous
  • anonymous
I don't understand where the +4 came from in step 3
anonymous
  • anonymous
never mind, I see now

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