Question

Write the given trinomial if possible as a square of a binomial or as an expression opposite to a square of a binomial:

Answer 1

$\frac{4}{9}b^2 + 0.4bc + 0.09c^2 = \frac{4}{9}b^2 + \frac{4}{10}bc + \frac{9}{100}c^2 = (\frac{2}{3}b + \frac{3}{10}c)^2$