Question

EXERCISE
1. Write the following sets in roster (Tabular)
form:

(1) A= {x: x2 - 4x - 5 = 0}

​

Answer 1

Answer:

x^2 -4x -5 =0

${x}^{2} - 4x - 5 = 0 \\ {x}^{2} - 5x + x - 5 = 0 \\ x(x - 5) + (x - 5) = 0$(x-5) (x+1) = 0

x-5 = 0

x =5

or

x+1=0

x = -1

A= { -1 ,5 }

plz mark as brainliest answer

Answer 2

Answer:

x2 - 4x - 5 = 0

=> x2 - 5x + x - 5 = 0

=> x(x - 5) + 1(x - 5) = 0

=> (x - 5) (x + 1) = 0

=> x - 5 = 0 or, x + 1 = 0

=> x = 5 or, x = -1

=> x = 5 or (-1)