Question

simplify : -2b^2 + b - 4b + 8b^2 - 7b^3

Answer 1

Answer:

{b}=\frac{{{7}-\sqrt{{-{63439}}}}}{{-{{496}}}}=\frac{{7}}{{-{{496}}}}+\frac{{i}}{{496}}\sqrt{{{63439}}}=-{0.0141}-{0.5078}{i}