1, Cho hàm số: y=f(x)=2x²+10

Chứng tỏ với mọi x có f(x)=f(-x)

2, Cho hàm số: y=f(x) được xác định (xđ) bởi bảng sau:

a, Xđ công thức của hàm số trên.

b, Tính: f(-4), f(-2018).

Rewrite each for the following sentences. Keep the meaning the same.

1. If you often go swimming, you'll keep fit.

Swimming will help...........................

2. It is bad for your heart if you eat too much meat.

Eating too much meat.........................

3. Tom didn't want to go to school because he had a temperature.

Tom had a temperature..............................

4. Jill doesn't like apples, so she doesn't eat them.

Jill ....................................like them.

5. Mary studies very well, but she never gets high marks in the class.

Although .........................................................in the class.

Tìm n thuộc N* biết: n²+4 chia hết cho n+1

(LÀM NHANH GIÙM MIK NHÉ! TRƯỚC 5H CHỦ NHẬT 8/7)