Question

Wykonaj działania :

Pier.-pierwiastek

(4pier3+2)*(pier3-1) ; (pier7-pier3)*(pier7+pier3)

3/pier2 ; 1/pier3 ; 4/3pier5

Answer 1

(4pier3+2)*(pier3-1) =

=(4√3+2)*(√3-1)=

=4*3-4√3+2√3-2=

=12-2√3-2=

=10-2√3

 

(pier7-pier3)*(pier7+pier3)=

=(√7-√3)*(√7+√3)=

=7-3=4

 

3/pier2 =3/√2=3√2/2

1/pier3 =1/√3=√3/3

 4/3pier5 = 4/3√5=4√5/3*5=4√5/15

 

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