Question

Tolong dijawab pake cara pliźzzzzzzzzzzzzzzz

Answer 1

4) (Ax+B)(x-3)= 4x² - 11x -3
Ax² +(B- 3A)x +(-3B) = 4x² -11x - 3
A= 4
-3B = -3 --> B = 1
A+B = 4+1 = 5

5)
(x+5)(Ax+B) = 2x² + 7x - 15
Ax² + (5A+B)x +(5B) = 2x² + 7x - 15
A= 2
5B = -15 --> B = -3

nilai A.B = (2)(-3) = -6