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b) 36x2 - 12x +22= 21
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DENISASTEFUT

36×^2 -12× +22=21

36×^2 -13× +22 - 21 =0

36×^2 -13× +22 -1 =9

36×^2 -12× +1 =9

(6×1) ^2 = 0

6× -1 =0

6× =1

x =1/6

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