A clean room

A clean room

A clean room

English translation
This classroom is divided into five parts：1.Exploration Center 2.Imaginative Play Center
3.Quiet Activities Center 4.Creative Problem Solving Center 5.Gross Activities Center
The classroom is divided into five parts
Please help translate the contents of these five parts, close to the kindergarten life

1.The room for discovering 2.The room for play 3.The room with no speaking 4.The room for thinking 5.Total room

English phrases of "No.9 bus" and "room 314"

The nineth route bus
room 314

Given that the function f (x) = sin (x + φ) + cos (x + φ) is an odd function, we can find the value of φ~
A.o
B.－π/4
C.π/2
D.π

f(x)+f(-x)=0
sin（x+φ）+cos（x+φ）+sin（-x+φ）+cos（-x+φ）=0
Sum difference product
sinφcosx+cosφcosx=0
tanφ=-1
So choose B

Mathematics 24 points 3.3.8.8. 5.5.5.5.5. 3.3.7.7

8/(3-8/3)=24
5*(5-5/5/5)=24
7*(3+3/7)=24

If a quadratic trinomial with only the letter A has a quadratic coefficient of - 2, a quadratic coefficient of 5 and a constant of - 10, then the polynomial is______ .

-2a²+5a-1

Apple 4 yuan a catty, Orange 5 yuan a catty, a total of 42 yuan to buy, ask the apple orange each buy a few catties, solve
The process of seeking solutions

Set: Apple x, orange y
4X+5Y=42
When y = 1, X is a non integer, rounding off
When y = 2, x = 8
When y = 3, X is a non integer, rounding off
When y = 4, X is a non integer, rounding off
When y = 5, X is a non integer, rounding off
When y = 6, x = 3
When y = 7, X is a non integer, rounding off
When y = 8, X is a non integer, rounding off
So: Apple 8 Jin, orange 2 jin, or apple 3 jin, orange 6 Jin

(square of M + Mn) / (- 2m)

The original formula = m (M + n) △ (- 2m)
=-(m+n)/2

(x+2y-z)(x-2y-z)(x-y-z)^2
(x+2y-z)(x-2y-z)(x-y-z)^2
solve equations
（2x-1）（1-2x）-8x（x+1）=-12（x-2)^2-3

4X^2-8X+1+8X^2+8X=12X^2-48X+48+3
48X=54
X=9/8

Factorization: 8xy-x & # 178; - 16y & # 178; - 16y & # 178; 3x-12x & # 179; 81-18 (a + 4) + (a + 4) &# 178; a & # 178; - 1-B & # 178; - 2Ab

Are you going to have 4 questions? (1) 8xy-x-x-3535\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\idon't know