1. Ask the survivors to bring x=-2 into x 4-5x 2- 1x- 12 =, and the answer is the remainder (you can also divide by a constant, depending on the meaning of the topic, but the speed is very slow).

2 ... I usually draw pictures, after all, they are all multiple-choice questions.

3. What is the Y-axis intercept of the tangent of the circle x 2+y 2 =1at (3/5, 4/5)?

The circle x 2+y 2 =1is tangent to the linear equation at the point (3/5, 4/5). What is the intercept of this linear equation? Understand when translating. I didn't understand it the first time.

4. Given the statement "If ∠ABC is a right angle, its measured value is 90 degrees", which of the following assumptions can be used to prove the statement indirectly?

If ∠ABC is a right angle, then the degree is 90. Which of the following assumptions can be directly drawn?

5. How many possible rational roots are there in F (x) = 4x 3-x 2+10x-6 through rational root test?

What are the possible rational roots of f (x) = 4x 3-x 2+ 10x-6?

(Can you use Cartesian rule or look at the degree? )

The two questions you added. ....

1.f(x)=(x-2)^3+6

f(x)=-(x-2)^3-6

2.f(x)=∣x- 1∣- 5 How to calculate the equation about y=-5 symmetry?

I feel very troublesome ... where did it come from?

I don't know the method

If the exam time is enough, draw a picture, take some points and fit an equation ... (usually give up.

This is a multiple-choice question, right? Draw, value, exclude. ..