Question

Sederhanakan bentuk aljabar berikut :

1. 4a + 10b - 9a + 12b
2. 12a² - 8b = 16a² - 21b
3. 9x + 6y - 10y - 8x
4. - 6y² - 8y - 14y² - 9y
5. 10x² - 3xy - 5y² - 18x² + 5xy + y²

Sm CaraNya Ya KakK KL Ga PAKe Cara Ga USaH JaWaBB

Answer 1

4a + 10b - 9a +12b = (4a-9a)+(10b+12b) = -5a + 22b

12a^2 - 8b = 16a^2 - 21b
12a^2 - 16a^2 - 8b + 21b = 0
-4a^2 + 13b = 0

9x + 6y - 10y - 8x = (9x-8x)+(6y-10y) = x - 4y

-6y^2 - 8y - 14y^2 - 9y = ((-6y^2)+(-14y^2))+((-8y)+(-9y)) = -20y^2 - 17y

10x^2 - 3xy - 5y^2 - 18x^2 + 5xy + y^2
= (10x^2 - 18x^2) + ((-3xy)+ 5xy) + ((-5y^2)+y^2)
= -8x^2 - 4y^2 + 2xy

^ = pangkat