Question

a) (2-6)²; f) 7³-5³; b) 3³.5²; g) 3-34; c) 4²:24; h) (2³)²-4; d) (8²)²; i) 125:5²; e) (1³)³; j) 6° : (25-3³).​

Answer 1

a) (2-6) la 2= 2la2-2•2•6+6la2
=4-24+36
= -20+36
=16


f) 7la3-5la3=
=(7-5)(7+5)
=2•12
=24


b) 3la3•5la2=
=27•25
=675


g) 3-34= -31

c) 2la2:24=
=4:24
=4/24
=2/12


h) (2la3)la2-4=
=2la6-4
=64-4
=60


d) (8la2)la2=
=8la4
=4096


i) 125:5la2=
=125:25
=5



e) (1la3)la3=
=1la9
=9



j) 6la0:(25-3la3)=
=1:(25-27)
=1:(-2)
= -1