1. A= a pangkat2 + 4a - 17 B= 3a pangkat2 - 4a + 4 A + B = A - B = 2. A= 2x pangkat2 - 5x - 2 B= 7x + 8 A + B = A - B =

A + b =

a^2 + 4a - 17
3a^2 - 4a + 4 [ + ]
____________________
4a^2 + 0 - 13 =
4a^2 - 13

A - b =

a^2 + 4a - 17
3a^2 - 4a + 4 [ - ]
____________________
-2a^2 + 8a - 21

2.) A + b =

2x^2 - 5x - 2
7x + 8 [ + ]
___________
2x^2 -2x + 6

A - b =

2x^2 - 5x - 2
7x + 8 [ - ]
___________
2x^2 - 12x - 10

Materi tentang persamaan kuadrat
jawab:
1.A+B=a²+4a-17 + 3a²-4a+4
=a²+3a² + 4a-4a -17+4
=4a² - 13
A-B=a²+4a-17 - (3a²-4a-4)
=a²-3a² + 4a-(-4a) - 17-4
=-2a² + 8a - 21

2.A+B=2x²-5x-2 + 7x+8
=2x² - 5x+7x - 2+8
=2x² + 2x + 6

A-B=2x²-5x-2 - (7x+8)
=2x² - 5x-7x - 2-8
=2x² - 12x - 10