Question

(3×√49−2×√25)÷√121

 (13×√144−5×√196)×√√361−√225

 (3×√2,025+2×√3,600−5×√1,764)÷√(3^(5)−2^(6)×3−6)^(2)

Answer 1

(3×√49−2×√25)÷√121=
(3×7−2×5)÷11=
(21−10)÷11=
11:11=1

(13×√144−5×√196)×√√361−√225=
(13×12−5×14)×√19−15=
(156−70)×√4=
86x2=172

Answer 2

(3×√49−2×√25)÷√121=1
=(3x7-2x5):11=
=(21-10):11=
=11:11=
=1

 (13×√144−5×√196)×√361−√225=1619
=(13x12-5x14)x19-15=
=(156-70)x19-15=
=86x19-15=
=1634-15=
=1619