Question

умножение многочлена на многочлен ​

Answer 1

(2x+5)(6-3x) = 12x - $6x^{2}$ + 30 - 15x = -3x - $6x^{2}$ + 30

(3x+1)(1.2 + 5x) = 3.6x + $15x^{2}$ + 1.2 + 5x = 8.6x + $15x^{2}$ + 1.2

(m+n)(m-n) = $m^{2}$ - mn + mn - $n^{2}$ = $m^{2} - n^{2}$

(x+2y-5)(4x+y) = $4x^{2}$ + xy + 8xy + $2y^{2}$ - 20x - 5y = $4x^{2}$ + 9xy + $2y^{2}$ - 20x - 5y