\(=\left(163+37\right)^2\) \(=200^2\) \(=40000\)

163² + 74 . 163 + 37² = ( 163 + 37 ) . ( 163 + 37 ) = 200 . 200 = 40000

163 + 79 + 132 = 374

Cảm ơn bạn

163 + 79 +132 

= 242 + 132

= 374

19/4 + 37/100 + 1/8 + 1/2 + 163/4 + 6/25 + 9/25

=( 19/4 + 163/4 )+ 37/100 + (1/8 + 1/2 ) + ( 6/25 + 9/25 )

= 182/4 +37/100+5/8+3/5

=(182/4+37/100+3/5)+5/8

=(4550/100+37/100+60/100)+5/8

=4647/100+5/8

=9419/200

 -37 + 54 + (-70) + (-163 ) + 246

= [ (-37) + (-163) ] + ( 54 + 246 ) + (-70)

=           -200         +        300       + (-70)

=                          100                 + (-70)

=                                    30

dap an cua Den do

-37+54+(-70)+(-163)+256

= [-37+ (-163)] + ( 54+256) + (-70)

= -200 + 210 + (-70)

= 10 + (-70)

= -60

-37+(-163)+54+256+(-70)= -200+300+-70=30

= ( -37 - 163 ) + (54 + 256) -70

= -200 + 310 - 70

= 40

a)\(x-\left(-24\right)=3\)

\(x+24=3\)

\(x=3-24\)

\(x=-21\)

b)\(22-\left(-x\right)=12\)

\(\Rightarrow22+x=12\)

\(\Rightarrow x=12-22\)

\(\Rightarrow x=-10\)

c) \(\left(27-x\right)+\left(15+x\right)=x-24\)

\(\Rightarrow27-x+15+x=x-24\)

\(\Rightarrow42=x-24\)

\(\Rightarrow66=x\)

d)\(x+x-\left(-4\right)=x+2\)

\(\Rightarrow x+x+4=x+2\)

\(\Rightarrow x+x-x=2-4\)

\(\Rightarrow x=-2\)

câu 2 :

\(-37+54+\left(-70\right)+9-163+246\)

\(=\left(-37-163\right)+\left(246+54\right)+\left(-70\right)+9\)

\(=-200+200+-61\)

\(=-61\)

MẤY BẠN GIÚP MÌNH VỚI MÌNH CẦN GẤP LẮM

A = 1995² - ( 1995-1) (1995+1)

= 1995² - (1995² - 1²)

= 1995² - 1995² +1

= 1

a.
(5/11 + 6/11 ) + ( 1/4 +3/4) + ( 6/25 + 9/25)
= 11/11 + 4/4 + 15/25
= 1 +1 + 3/5
= 2+3/5 = 13/5
b.
( 37/100 + 163/100) + (1/8 + 3/8 ) + 19/4 + 1/2
=  200/100 + 4/8 + ( 19/4 + 2/4)
=    2 + 1/2 + 21/4
=  31/4