3 ms·
You can also multiply polynomials by way of analogy with integer multiplication: 3 1 2 1 × 2 0 6 ------------ 18 6 12
by nayuki 1y ago
You can also multiply polynomials by way of analogy with integer multiplication:
3 1 2 1
× 2 0 6
------------
18 6 12 6
0 0 0 0
6 2 4 2
-----------------
6 2 22 8 12 6
= 6x^5 + 2x^4 + 22x^3 + 8x^2 + 12x^1 + 6x^0.
- deleted 1y ago[deleted]
- kazinator 1y agoNot to mention divide: 2x^2 + 5x - 3 ------------- x + 2 2x + 1 ______________ x + 2 | 2x^2 + 5x - 3 2x^2 + 4x ------------- x - 3 x + 2 ----- - 5 The remainder is -5, which gives us a -5/(x + 2) term: Thus 5 = 2x + 1 - ----- x + 2 How about something we know divides: x + 1 _______________ x + 1 | x^2 + 2x + 1 x^2 + x -------- x + 1 x + 1 ----- 0