Question

Jawab pertanyaan di atas ⬆

Answer 1

Yang (a) 4m-5-6m+8= (4-6)m + (-5+8)= -2m +3. Yang( b) 9p²-4pq-q²-4p²+5pq-3q²= (9-3)p²+ (-4+5)pq+(-1-3)q²=6p²+pq-4p². Yang (c) 2(-8a-3b)-4a+9= (-16a-6b)-(-4a+9)= -16a-6b+4a+9= (-16+4)a-6b+9= -12a-6b+9. Yang (d)12x³-9x²-8-15x³+7x²+5= (12-15)x³+(-9+7)x²+(-8+5)=-3x³-2x²-3. Yang(e)=-12k²l-9kl²-18k²l-8kl²= -30k²l-17kl. Yang (f) 15m³-25m²+5m-2m³-8m²+9m= 13m³-33m²+14

Answer 2

A)4m-5-6m+8
=4m-6m-5+8
=-2m-13
b)9p**-4pq-q**-4p**+5pq-3q**
=9p**-4p**-4pq+5pq-q**-3q**
=5p**-9pq-2q**
c)2(-8a-3b)-4a+9b
=-16a-6b-4a+9b
=-16a-4a-6b+9b
=12a-15b
d)12x***-9x**-8-15x***+7x**+5
=12x***-15x***-9x**+7x**-8+5
=-3x***-16x**-13
e)-3(4k**l+3kl**)+2(-9k**l-4kl**)
=-12k**l-9kl**-18k**l-8kl**
=-12k**l-18k**l-9kl**-8kl**
=-6k**l-1kl**.

Tanda(**) maksudnya pangkat 2.
Tanda(***) maksudnya pangkat 3.
By:Christina.