If $1-64 x^3-12 x+p x^2=(1-4 x)^3$, then the value of p is:
Answer & explanation
Correct answer: option 1
1 – 64x3 – 12x + px2 = (1 – 4x)3
= 1 – 64x3 – 12x + px2 = 1 – 64x3 – 3 × 1 × 4x (1 – 4x)
= 1 – 64x3 – 12x + px2 = 1 – 64x3 – 12x + 48x2
= px2 = 48x2
= p = 48