Question

KRS LTE
KENDRIYA VIDYALAYA TAWANG
14.
1 poin
2. Rahul follows the below steps to find the roots of the equation 3x2 - 11x - 20 = 0, by splitting the
middle term.
Step 1: 3x2 - 11x - 20 = 0
Step 2: 3x2 - 15x + 4x - 20 = 0
Step 3: 3x(x - 5) + 4(x - 5) = 0
Step 4: (3.x – 4)(x - 5) = 0
Step 5: r = 4/3 and 5
In which step did Rahul make the first error?​

Answer 1

Answer:

its in the 2 step

Answer 2

Answer:

middle term splitting =(-11×)

-(15x)+4x= -11x

Step-by-step explanation:

3×2 -15x+4x-20=0