10 × 10 = 100 (Therefore, x equals 10.)
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x2-20x+100 = (x-10)(x-10) when factored
((3 x 100) + (5 x 10) + (4 x 1)) + ((7 x 100) + (8 x 10) + (2 x 1))
55.505 = (5 x 10) + (5 x 1) . (5/10) + (0/100) + (5/1000)
x + 50 = 2x + 100 50 = 2x+100-x 50 = x + 100 50-100=x -50=x -50+50=0 -100+100=0 it is zero
% rate:= (10/10) x 100%= 1 x 100%= 100%