Question

12(x³ - 2) - 7x(x² - 1) = 5x³ + 2x + 6

Answer 1

12(x³ - 2) - 7x(x² - 1) = 5x³ + 2x + 6
12х³-24-7х³+7х=5х³+2х+6
12х³-7х³-5х³+7х-2х=6+24
5х=30
х=6