Tolong jawab soalnya no 2 sampai 6​

Jawaban:

2. 5x+7y

3. 20x -3y -6z

4. 3x²-4

5. -2x-15z

6. a. x1+x2+8=7

b. 24= x -7

c. 8 = (1/3) p

d. 2 (p+l) = 36

Penjelasan dengan langkah-langkah:

2. 4x + 7y + (-3x) + 4y

= 4x – 3x + 7y +4y

= x + 11y

3. 12x + 3y – 10z + 8x – 6y +4z

= 12x + 8x + 3y – 6y – 10z +4z

= 20x – 3y – 6z

4. 8x² + 2x – 9 – 5x² – 2x +5

= 3x² – 9 + 5

= 3x² – 4

5. -10x – 5xy – 14z + 8x + 5xy – z

= -10x + 8x – 5xy + 5xy – 14z – z

= -2x – 13z

maaf kalau salah, semoga bemanfaat