Question

2X pangkat 2 + x -15

Answer 1

2x² + x - 15 = 0

p × q = a × c
p × q = 2 × (-15)
p × q = -30

p + q = b
p + q = 1

berarti p = 6 dan q = -5

= (ax² + px)(qx + c)

= (2x² + 6x)(-5x - 15)

= 2x(x + 3) - 5(x + 3)

= (2x - 5)(x + 3)

Semoga membantu ^_^