Question

answer 6 7 8 questions. ...plss

Answer 1

Answer:

Step-by-step explanation:

(6)

Formulae

x^2 –(sum of zeroes)x + product of zeroes

Zeroes are 4 and 1

So

x^2 –(4+1)x + (4)(1)

x^2 –5x + 4

Answer is option A

(7)

Given

tanx = 3cotx

We know cotx = 1/tanx

So,

tanx = 3(1/tanx)

tan^2x= 3

tanx = √3

tan60° = √3

So x = 60°

Answer is option B

(8)

Since we are given that two circles are congruent, their radii are equal

Let their radius be 'r'

Area of circle = πr^2

πr^2 – πr^2

=> 0

Answer is 0

Answer is option D

Hope this helps you