maths chapter 7 questions

Question

Answer

Maths Chapter 7 Questions

Question 1: What is the quadratic formula?

The quadratic formula is a formula used to solve quadratic equations, which are equations with one variable squared. The formula is written as:

x = (-b ± √(b² - 4ac)) / 2a

x is the variable being solved for

a, b, and c are coefficients of the quadratic equation

± represents both the plus and minus signs

√ represents the square root

Question 2: How do you factor a quadratic equation?

Factoring a quadratic equation means to write it as a product of two factors. To factor a quadratic equation, follow these steps:

Write the quadratic equation in the form ax² + bx + c = 0

Find two numbers that multiply to give c and add to give b

Write the quadratic equation as (x + [first number])(x + [second number]) = 0

Solve for x by setting each factor equal to zero

Question 3: What is the difference between a linear equation and a quadratic equation?

A linear equation is an equation with a degree of 1, meaning that the variable is not squared. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.

A quadratic equation is an equation with a degree of 2, meaning that the variable is squared. It can be written in the form y = ax² + bx + c, where a, b, and c are coefficients. Quadratic equations can have one, two, or zero real solutions, while linear equations always have exactly one solution.

Question 4: How do you solve a system of equations?

A system of equations is a set of two or more equations with two or more variables that must be solved simultaneously. To solve a system of equations, follow these steps:

Write the equations in standard form

Choose a variable to eliminate by either adding or subtracting the equations

Combine the equations to eliminate the chosen variable and solve for the remaining variable

Substitute the value found for the remaining variable back into one of the original equations to solve for the other variable

Answer

refer to uphaday uphaday chap 7 ncert solutions

Similar Class 9 Doubts

Extra questions and answers of Hindi sparsh chapter 7?

Needed a Document for Short Answer Questions (with Solutions) Chapter 7 - The Road Not Taken, Class 9, English? Related: Long Answer Questions (with Solutions) Chapter 7 - The Road Not Taken, Class 9, English

what made all the difference Related: Short Answer Questions (with Solutions) Chapter 7 - The Road Not Taken, Class 9, English

Case study questions maths chapter 6?

Class 9th Maths case study questions chapter Linear Equation?

Top Courses for Class 9View all

Science Class 9

Social Studies (SST) Class 9

Mathematics (Maths) Class 9

English Class 9

English Grammar Advanced

Top Courses for Class 9

Top Courses for Class 9

Suggested Free Tests

Related Content

Class 9 Study Material

Class 9 Subjects

Competitive Examinations for Class 9

NCERT Books

NCERT Solutions

Reference Books for Class 9

Other Popular Exams

Company