Question

40 баловввв Спростіть вираз:1) (x-4)-16;2) 10а + (a-3)2;​

Answer 1

1) (x - 4) - 16 = x - 4 - 16 = x - 20

2) 10a + (a - 3) * 2 = 10a + 2a - 6 = 12a - 6

или

10a + (a - 3)² = 10a + a² - 6a + 9 = a² + 4a + 9

Answer 2

1) (x-4)-16 First, let's simplify the expression inside the parentheses: (x-4) can be written as x-4 Now we substitute this simplified expression into the original expression: x-4 - 16 Now, let's combine like terms: x - 4 - 16 = x - 20 So, the simplified expression is x - 20. 2) 10а + (a-3)2 First, let's simplify the expression inside the parentheses: (a-3)2 can be expanded as (a-3)(a-3) = a^2 - 6a + 9 Now, we substitute this simplified expression into the original expression: 10а + (a^2 - 6a + 9) Now, let's combine like terms: 10а + a^2 - 6a + 9 Now, let's rearrange the terms: a^2 + 10a - 6a + 9 Now, let's combine like terms again: a^2 + 4a + 9 So, the simplified expression is a^2 + 4a + 9.