Question

Class 10th me quadratic equations ka situational problem(word problem) aaegi kya??​

Answer 1

Ha yes it will come maybe

Answer 2

yes officious Quadratic Word Problems are important

THIS TYPE OF QUESTIONS ARE COMING IN EXAM

. Determine two consecutive negative even integers whose product is 24?

SolutionLet n and n-2 be the two consecutive negative even integers

then

n

(

n

−

2

)

=

24

n

2

−

2

n

−

24

=

0

or

(

n

−

6

)

(

n

+

4

)

=

0

n=6 or -4

Since we want the negative integers only, n=-4

other number =n-2= -4-2 = -6

So numbers are (-6,-4)

Question 3

A rectangle has a length that is 2 less than 3 times the width. If the area of this rectangle is 16, find the dimensions and the perimeter.

SolutionLet x= the length of the rectangle and y= its width

As per the question

x

=

y

−

2

Given ,The area of this rectangle is 16

Now

A

r

e

a

=

x

y

=

16

or

(

3

y

−

2

)

y

=

16

3

y

2

−

2

y

−

16

=

0

Factoring

(

3

y

−

8

)

(

y

+

2

)

=

0

y = 8/3 and -2

Since we can't have a negative width, y= 8/3

Now x=3y-2 = 6

Perimeter = 2x + 2y = 12 + 16/3 = 64/3