=- 1-3-2
=-6
2. Solution: The original formula =- 16+ 1*9+2.
=-5
3. Solution: The original formula =-9/2 * 2/41*123 *-2/9.
= 6
4. Solution: The original formula =-1*1/4+6+5 =-1/4+1=10 and 3/4.
1 math problem, thank you! It's simple! -23 10/ 13 or-177 and 9/ 13.
Two math problems are very simple (-1 and 1)×(-2 and 2/3 )× (+3 and 3/4 )× 2/5 × (-65438+4/05 )× (-3/8).
=[(-3/2)×2/5]×[(-8/3)×(-3/8)]×[(+4 of 15)×(-65438+4 of 05)]
= (-3/5) × 1 × (- 1)
= 3/5
2 1-49.5+ 10.2-2+ 19+ 1.3
=(2 1+ 19+ 10.2+ 1.3)-(49.5+2)
=5 1.5-5 1.5
=0
5ab-{2a^2b-[3abc-(4ab^2-a^2b)]}
=5ab-{2a^2b-[3abc-4ab^2+a^2b]}
=5ab-{2a^2b-3abc+4ab^2-a^2b}
=5ab-{a^2b-3abc+4ab^2-a^2b}
=5ab-a^2b+3abc-4ab^2+a^2b
=5ab+3abc-4ab^2
15a^2-{-4a^2+[5a-8a^2-(2a^2-a)+9a^2]-3a}
= 15a^2-{-4a^2+[5a-8a^2-2a^2+a+9a^2]-3a}
= 15a^2-{-4a^2+6a-a^2-3a}
= 15a^2+5a^2-3a
=20a^2-3a
=20(- 1/5)^2-3(- 1/5)
=4/5+3/5
=7/5
= 1.4
A math problem, very simple! (-12÷3) Quadratic =4 Quadratic = 16
| 12 and 16 7- 19 and 15 4 |+ 18 and151-1.
=6 and 199/240+8 and 4 1/240.
= 15
Simple method:
| 12 and 16 7- 19 and 15 4 |+ 18 and151-1.
= 19 and 15 points 4- 12 and 16 points 7+ 18 and 15 points 16 points 0- 10 and/kloc.
= 19 4+ 18 15 1 1-( 12 16 7+ 10 16 9)
=38-23
= 15
A math problem! Twenty minutes! It's simple! The original formula =-116 * 2/5+(1/4+1/3/4) * 24+125.
=-1/40-4+125 =120 and 40 of 39.
Two calculation problems, thank you. The process is the square root of (1)2 6/(root number 3+ 1).
The square root of = 2 6 * (root number 3- 1)/[ (root number 3+ 1) (root number 3- 1)]
The square root of = 2 6 * (root number 3- 1)/2.
The root number 2-6 of =3 is the square root.
(2) Root number 24+ Root number 0.5-2 Root number (2/3)- Root number (1/8)+the square root of 6
The square root of = 2 6+(root number 2)/2-2 (root number 6) /3- (root number 2)/4+6.
= (square root 6 of 7)/3+(root number 2)/4
[Help] 4 math problems ~ Important process, thank you, urgent! 1)=3/4+( 1/5+4/5)+( 1/6+5/6)+( 1/7+7/8)+( 1/9+8/9)+ 1/ 10
=4+3/4+ 1/ 10=97/20
2) =-28/3 1-78 and 3/31(5/4-0.375+1/8)
=-28/3 1-78 and 3/3 1=-79.
3) The last one is (1 /99× 100).
( 1 / 1×2)+( 1 /2×3)+( 1 /3×4)+......+( 1 /99× 100)
= 1/ 1- 1/2+ 1/2- 1/3+...+ 1/99- 1/ 100= 1- 1/ 100=99/ 100
4)( 1 / 10 1× 103)+( 1 / 103× 105)+( 1 / 105× 107+......+ ( 1 / 199×20 1)
=2( 1/ 10 1- 1/ 103+ 1/ 103- 1/ 105+......+ 1/ 199- 1/20 1) =2( 1/ 10 1- 1/20 1)
=400/20 1× 10 1
Two math problems, very simple. Urgent! 1,
= (root number 12- root number 2)- (root number 18- root number 3)
= (radical number 2- radical number 3)-(radical number 2-radical number 3)
=2 times root number 3+ root number 3- (root number 2+3 times root number 2)
=3 times the root number 3-4 times the root number 2.
2,
=2 times root number 1/5+ root number 2- 1/3 times root number 2.
==2 times the root number 1/5+2/3 times the root number 2.