Question

ДАЙТЕ РЕШЕНИЕ ПОЖАЛУЙСТАА!)
Вычислить:
$( \frac{2}{3} \div 3 - 1) \times 1.5 {}^{2} - 0.25$

Answer 1

$( \frac{2}{3} \div 3 - 1) \times 1.5 {}^{2} - 0.25 = ( \frac{2}{3 \times 3} - 1) \times ( \frac{3}{2} ) ^{2} - \frac{1}{4} = \\ = ( \frac{2}{9} - 1) \times \frac{9}{4} - \frac{1}{4} = - \frac{7}{9} \times \frac{9}{4} - \frac{1}{4} = - \frac{7 \times 9}{9 \times 4} - \frac{1}{4} = \\ = - \frac{7}{4} - \frac{1}{4} = - \frac{8}{4} = - 2$

Answer 2

(2/3*1/3-1)*1,5^2-1/4=(2/9-1)*1,5^2-1/4=(-7/9)*1,5^2-1/4=-7/9*(3/2)^2-1/4=-7/9*9/4-1/4=-7*1/4-1/4=-7/4-1/4=-2