a)[(7/2)²-(3,5)³:(7/2)²]×4/35-(7/2)²+(7/2)²×(7/2)°=
=[(7/2)²-(35/10)³ ×(2/7)²]×4/35-(7/2)²+(7/2)²×1=
=[(7/2)²-(7/2)³ ×(2/7)²]×4/35-(7/2)²+(7/2)²=
=[(7/2)²-7/2]×4/35=
=(49/4-14/4)×4/35=
=35/4×4/35=1
b)[7/5+(2-7/5)⁵⁷:(2-7/5)⁵⁶]⁴×1/4²=
=[7/5+(2-7/5)]⁴×1/2⁴=
=(7/5+3/5)⁴×1/2⁴=
=(10/5)⁴×1/2⁴=
=2⁴×1/2⁴=1
