October 2018 1 21 Report

a)2/5a²+1-0,2a²+3b²-3+1/3b²=

b)2√6x-5√3y-√6x+4√3y=

c)ab²-2ab=

d)7x²+3x⁴-2x³=

e)x²+4xy+x+4y=

f)(-3x-4)(5-2x)=

g)2√a-√b)(-√b+2√a)=

prosze pomózcie !! daje naj


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