August 2018 1 25 Report
2.75

a) (3x-1)(4x+5)=(4x+5)(2x-1)
b) 3x²+25=0
c) 81-(x-2)²=0
d) -4x²+44x-121=0
e) -x²-√2 x=0
f) 25(x-1)²-9(x+2)²=0

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