Question

24.
25.
Check whether which of the following are quadratic equations
a) x^2-2x = -2(3- x) b) x(x+1) +8=(x + 2)(x-2)
A bag contains of one red ball, one yellow ball and one blue ball. All
are equal in size. Vahini takes out a ball from the bag without looking
into. What is the probability that she takes one (i) yellow ball (ii) red
ball (iii) blue ball and (iv) not an yellow ball.​

Answer 1

Answer:

24):- a) x²-2x = -2(3-x)

25):-(i)1/3. (ii)1/3. (iii)1/3. (iv)2/3

Step-by-step explanation:

24):-Explanation

in option a. x²-2x=-6+2x

so we get x²-4x+6 it is a quadratic equation

but

in option b. x(x+1)+8=(x+2)(x-2)

so we get x²+x+8 = x²-2x+2x+4

here in both sides x² will cancel so it is a linear equation not quadratic equation.

25):-A bag contains

Yellow ball=1

red ball=1

blue ball=r1

total ball=3

in question i,ii ,iiione random ball is taken so,

probability of yellow ball is 1/2. red ball 1/2. blue ball=1/2. and in iv not an yellow so probability is 2/3

Thank you