Question

Subtract 2x^3 - 3 x - 6 + 8x^2 from 8x - 10 + 7x^2 - 9x^ 3​

Answer 1

( 8x - 10 + 7x² - 9x³ ) - ( 2x³ - 3x - 6 + 8x² )

( -9x³ + 7x² + 8x - 10 ) - ( 2x³ + 8x² - 3x - 6 )

=> -9x³ + 7x² + 8x - 10 - 2x³ -8x² + 3x + 6

=> -11x³ - x² + 11x - 4