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What number must be added? x^(2)-0.2x+___ Thx..
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x^2+2(x)(-1/10)+(-1/10)^2 (x-1/10)^2
Answer is 1/10
take the middle coefficient; half it and square it
@ Vengeance921, it's actually wrong.. they want in Decimals or integer. Thx.. ;)
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