Question

А) 5(4b-1,2). б) 3b(4+5b). в) 0,2y(4y+9). г) -8y (2,5y-0,6)

Answer 1

А что надо сделать? Решить или расскрыть скобки? Можешь , пожалуйста подробнее сказать

Answer 2

Ну вот как то так просто надо подобрать число место символа

Answer 3

To simplify each expression, you can use the distributive property and perform any necessary calculations. Let's simplify each expression step by step:

а) 5(4b - 1.2) To simplify, distribute the 5: 5 * 4b = 20b 5 * (-1.2) = -6

So the simplified expression is: 20b - 6

б) 3b(4 + 5b) To simplify, distribute the 3b: 3b * 4 = 12b 3b * 5b = 15b^2

So the simplified expression is: 12b + 15b^2

в) 0.2y(4y + 9) To simplify, distribute the 0.2y: 0.2y * 4y = 0.8y^2 0.2y * 9 = 1.8y

So the simplified expression is: 0.8y^2 + 1.8y

г) -8y(2.5y - 0.6) To simplify, distribute the -8y: -8y * 2.5y = -20y^2 -8y * (-0.6) = 4.8y

So the simplified expression is: -20y^2 + 4.8y

And there you have it! Each expression has been simplified.