Calm down and try to get extra points for any strong subjects. Not everyone can learn math. Try to grasp the basic points, regardless of which problem. Generally speaking, at least 90 points on the math paper is the basis.

Method:

Equation (1)

If you can't find a complex relationship, find a simple relationship, such as size, quantity, addition and subtraction. Find all the relationships you can find (if you have to use them again). If you can't find it, just write it casually, such as setting an unknown number (1 minute).

If you do well in the exam, you'd better draw a picture or table (draw the distance, the rest are generally used) to find the relationship.

(2) Function

Geometric problems are generally similar or congruent. It is best to mark the length of the known line segment on the diagram, and generally use points to solve the unknown. Such a question is generally not too difficult for you. In particular, remember that the area of the triangle purchased at the intersection and origin of a point on the inverse proportional function image with the vertical line of Y axis or X axis is half that of k, and pay attention to the symmetry of quadratic function.

Generally speaking, the moving points are almost the same, and the key points are all regarded as known points, which are all represented by xy (if it is really not possible, don't do it)

(3) Calculation

If it is difficult, take it apart and divide it into positive sign and negative sign (pay attention to the sign change of negative sign).

Quadratic roots are simplified at first, and then calculated by using the properties of roots.

Note: Recommend a book "Make a mountain out of a molehill". After reading this book, you need 85 points in math.