2
- 1x + 6x 8x + 12
2.
= x + 6x²
- 8x + 12.
Exercise 2.2
1. Classify into like terms:
31
3
x – Oxy' ty, and 33.
2.
4, 5x, +8x", xy, 6x”, 4y, -74x”, 8xy, Txyz, 3x?.
2. Simplify:
(1) 7x - 9y + 3 – 3x - 5y +8; (ii) 3x +5xy – 4y' + x - 8x57.
3. Add:
(i) 5a +3b, a
2b and 3a +5b; (ii) x - x’y + 5xy + y, -x'
4. Subtract:
(i) -2xy + 3xy from 8xy; (ii) a - b- 2c from 4a + 6b - 2c.
Multiplication of Polynomials
Observe the following products: (i) 5x * 6x = (5 * 6)x (x * x) = 36
(ii) 2x x 6y x 8z = (2x x 6y) * (Hz)
((2x 6)* (x * y)) * (8z) = (12xy) * (8z)
(12x 8) (xy X z)
(1-2x + (5 + 1) x + (-44) x + 164
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