Question

operações indicadas!! me ajudem pfv​

Answer 1

Explicação passo-a-passo:

$a) \\ (2 {y}^{2} - 3ay + 4a) - (3 {y}^{2} - ay - a) \\ 2 {}^{2} - 3a + 4a - 3y {}^{2} + ay + a \\ - {y}^{2} - ay + 5a \\ b) ( \frac{1}{2} x + \frac{5}{2} y) + ( \frac{3}{4} x - \frac{2}{3} y) \\ \frac{1}{2} x + \frac{5}{2} y + ( - \frac{1}{2} xy) \\ \frac{1}{2} x \frac{5}{2} y - \frac{1}{2} xy \\ c)(6a - \frac{2}{3} b + 2c) \times ( - \frac{1}{2} abc) \\ - 3 {a}^{2} bc + \frac{1}{3} a {b}^{2} c - ab {c}^{2}$