Veto q&a 7 Month22 (1)

@hang out
80 + 3 245 − 125 = 16 × 5 + 3 49× 5 − 5×
25
= 4 5 + 3× 7 5−5 5
= 4 5 + 21 5 −5 5
= 25 5−
5 5
= 20 5
= 20x2.236( 5 = 2.236)
= 44.72
b. 75 + 147 :
75 + 147 = 25× 3 + 49×
3
= 5 3+
7 3
= 12 3
= 12x1.732
= 20.784
1 1 3
= ×
3 3 3
3
=
3
1.732
= = 0.577
3
1
5
1 1 5
= ×
5 5 5
5
=
5
2.236
= = 0.447
5
2018
July
242 ÷ 72
242 ÷ 72 =
242
72
=
121×
2
36 × 2
11 2
=
6 2
5
=1 6
1
2
1 1 2
= ×
2 2 2
2
= a× a = a
2
1.414
=
2
= 0.707
1
3
1 1 3
= ×
3 3 3
3
Q&A Bonus =
( )
3
1.732
2
2+
2
2 2 2−
2
= ×
2+ 2 2+ 2 2−
2
2( 2−
2)
=
4−
2
2 2−
2
=
2
2( 2−
1)
=
2
= 2 − 1= 1.414 −1
= 0.414
3−
2
= ?
3+
2
3− 2 3− 2 3−
2
= ×
3+ 2 3+ 2 3−
2
( 3−
2)( 3−
2)
=
3−
2
= 3− 6 − 6 + 2
= 5 − 2 6 = 5-2x2.449
= 5-4.888 = 0.112
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