Factor x^2+64 using complex numbers

(x + 8i)(x - 8i)

Step-by-step explanation:

note that

8i × - 8i = - 64i² = 64 → i² = - 1

Thus

x² + 64 = (x - 8i)(x + 8i) ← difference of squares

c.

step-by-step explanation:

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14