if the mean of the zeros of quadratic polynomial is 3 the sum of squares of zeros is 20 and it forms a rectangle then find the area of rectangle.
Answers
Answer:
ax2 + bx + c = 0 is the standard form of a quadratic equation where a ≠≠ 0. In the first exercise, students will learn how to check whether the given equation is quadratic or not and representing the same. Various word problems are given and students need to form quadratic equation from the given word problem.
The next section is about the topic- Solution of Quadratic equation by factorisation. Roots of the equation can be found by factorising the equation into two linear factors and then equating each factor to zero. In exercise 4.2 students have to find roots of the following equation by factorisation method.
The next part is about the solution of a Quadratic equation by completing the squares. This concept is made more understandable by the illustration of figures. Problems given in the next exercise is based on the same concept.
The next method given is the use of quadratic formula. This is the most important method used to solve the quadratic equation.
In exercise 4.3 students will find several word problems that will help them to make their concept more clear.
Thus to conclude there are three methods to solve a quadratic equation:
FACTORISATION METHOD
COMPLETING SQUARES
QUADRATIC FORM
Answer:
20 <_23
Step-by-step explanation:
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