Question

Please help i don’t understand

Answer 1

Step-by-step explanation:

f(x) = x³ − 8x² − 12x + 96

Factor by grouping:

f(x) = x² (x − 8) − 12 (x − 8)

f(x) = (x² − 12) (x − 8)

f(x) = (x + √12) (x − √12) (x − 8)

f(x) = (x + 2√3) (x − 2√3) (x − 8)

The roots are ±2√3 and 8.