Question

ПОМОГИТЕ СРОЧНО! ДАЮ МНОГО БАЛЛОВ

Answer 1

Объяснение:

1)

${m}^{2} + {n}^{2} = 0.81 + 0.01 = 0.82$

2)

$\frac{3a( {a} - 4)(a + 4) }{5a( {a} - 4)(a - 4)} = \frac{3 \times (16 + 4)}{5 \times (16 - 4)} = \frac{3 \times 20}{5 \times 12} = \frac{4}{4} = 1$

3)

$\frac{5(a + b)(5a + 5b)}{5(a - b)(5a + 5b)} = \frac{a + b}{a - b} = \frac{0.3 - 0.2}{0.3 + 0.2} = \frac{0.1}{0.5} = \frac{1}{5} = 0.2$

4)

$\frac{5(2x - 3y)(2x - 3y) }{7(3y - 2x)} = - \frac{5 \times 0.7}{7} = - 0 .5$