Question

помогите пожалуйста срочно выполнить действия​

Answer 1

$0.6x {}^{2} y( - 0.5x {}^{5} y ^{7} ) = - 0.3x {}^{7} {y}^{8 }$

$0.6 {x}^{4} ( - 10 {x}^{4} ) {}^{3} = - 600 {x}^{16}$

$(2a {}^{7} {x}^{12} ) { }^{4} \frac{1}{8} ax = 2a {}^{29} x {}^{49}$

$(3a {}^{2} - 11a + 4) - (6a {}^{2} + 2a + 3) = - 3 {a}^{2} - 9a - 7$

$3a {}^{3} (2 {a}^{2} - 4) = 6a {}^{5} - 12 {a}^{3}$

$(x + 1)(x {}^{2} - 3x - 4) = x {}^{3} - 3 {x}^{2} - 4x + {x}^{2} - 3x - 4 = {x}^{3} - 2x {}^{2} - 7x - 4$

$(x + 5)(2 {x}^{2} - 2) - 10 {x}^{2} = 2x {}^{3} - 2x + 10 {x}^{2} - 10 - 10x {}^{2} = 2 {x}^{3} - 2x - 10$

$(8a {}^{4} + 2 {a}^{3} ) \div \frac{1}{2} {a}^{3} = (8a {}^{4} + 2a {}^{3} ) \times 2 {a}^{3} = 16 {a}^{7} + 4 {a}^{6}$