Question

3х(х+2)-(х+3)² при х=-0,1

Answer 1

3х2+6х-х2+6х+9
Якщо х=-0,1
3•(-0,1)2+6•(-0,1)-(-0,1)2+6(-0,1)+9=
Далі просто розрахувати

Answer 2

Ответ:3х²+6х-х²-9

Якщо х=-0.1 маємо

3*(-0.1)²+6*(-0.1)+(0.1)-9=3*0.1+6.1+0.1-9=-2.5

Объяснение:

Answer 3

To evaluate the expression 3x(x+2)-(x+3)² when x=-0.1, we can substitute the value of x into the expression and perform the calculations. Let's go step by step:

Step 1: Substitute x=-0.1 into the expression. 3(-0.1)(-0.1 + 2) - (-0.1 + 3)²

Step 2: Simplify the expression inside the parentheses. 3(-0.1)(1.9) - (2.9)²

Step 3: Perform the multiplications inside the expression. -0.3(1.9) - (2.9)²

Step 4: Simplify the multiplications. -0.57 - (2.9)²

Step 5: Square the value of 2.9. -0.57 - 8.41

Step 6: Perform the subtraction. -8.98

Therefore, when x = -0.1, the expression 3x(x+2)-(x+3)² evaluates to -8.98.