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calculati (radical45-radical5)^2-(radical11-radical13)(radical13+radical11)


Răspuns :

40 - (11 + 13) =  40 - 24 = 16
[tex]( \sqrt{45}- \sqrt{5})^2-( \sqrt{11}- \sqrt{13})(\sqrt{11}+ \sqrt{13})= \sqrt{45}^2-2 \sqrt{45*5}+ \sqrt{5}^2 [/tex] -[tex]( \sqrt{11}^2- \sqrt{13}^2) [/tex]= 45-2[tex] \sqrt{9*5*5} [/tex]+5-(11-13)=50-2*3*5+2=
20+2=22