Answer:
I need it in English please so I can helps
2+2=4
a^2+b^2=c^2
15^2-4^2
=225-16
=209
Answer:
35/2 or 17.5 or 17 1/2
Step-by-step explanation:
Δ = (8i)^2 - 4*(-25) => Δ = -36 +100 => Δ = 64 => x1 =(-8i + 8)/2 => x1 = -4i +4;
x2 = (-8i - 8)/2 => x2 = -4i-4; in this case, your solutions are complex conjugates.
