\(2x^2\left(5x^3-4x^2y-7xy+1\right)\\ =2x^2.5x^3-2x^2.4x^2y-2x^2.7xy+2x^2.1\\ =10x^5-8x^4y-14x^3y+2x^2\)
2x2 (5x3- 4x2y-7xy+1)
= 2x2. 5x3 - 2x2 . 4x2y - 2x2 . 7xy + 2x2 . 1
= 10x5 - 8x4 y - 14x3y + 2x2
2x2(5x3-4x2y-7xy+1)
=2x2.5x3-2x2.4x2y-2x2.7xy+2x2.1
=10x5-8x4y-14x3y+2x2