Question

5x-4{-[3-4(5x+1)+2(3-2x)]}

Answer 1

5x - 4{-[3 - 4(5x + 1) - 2(3 - 2x]}
5x - 4{-[3 - 4(5x) - 4(1) - 2(3) + 2(2x)]}
5x - 4{-[3 - 20x - 4 - 6 + 4x)]}
5x - 4{-[3 - 4 - 6 - 20x + 4x]}
5x - 4{-[-7 - 16x]}
5x - 4{7 + 16x}
35x + 80x² - 28 - 64x
80x² + 35x - 64x - 28
80x² - 29x - 28