Question

CASE STUDY III: D.A.V school of Delhi decided different types of tours
for the students to educate them. So, In class IX, 1
12
times the square of
the total number of students planned to visit historical monuments 7
12
times
the member of students planned to visit old age homes while 15 students
decided to teach poor children.
Using the above information answer the following questions (any 4):
(i) Express the total number of students as a polynomial in terms of x

Answer 1

Answer:

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Step-by-step explanation:

Let the total number of students be x.

3 ⇒x= 16+ √x 8

3 8 -x-16=√x

→ 3x - 128= 8√x

→ 3x-8√x-128=0

Let √x = y

Then, 3y²-8y-128=0

3y²-24y+16y-128 = 0

(y-8)(3y+16) = 0

⇒ y = 8 or y= 16/ 3

thus, y=8

= x = 64