Question

Factorise : 36 - 21x + 3x^2

Answer 1

Answer:

3(x-3)(x-4)

Step-by-step explanation:

Arranging,

3x²-21x+36

take 3 common,

3(x²-7x+12)

Factorizing,

3(x²-(3+4)x+12)

3(x²-3x-4x+12)

3(x(x-3)-4(x-3))

3(x-3)(x-4)