Question

(а-2)(а-11)-2а(4-3а) при а=-2

Answer 1

Ответ: 92

Решение: (-4) * (-13) + 4 * 10 = 92

Answer 2

To evaluate the expression (а-2)(а-11)-2а(4-3а) when а=-2, you simply substitute the value of а with -2 and then perform the calculations. Let's do it step by step:

Step 1: Substitute а with -2: (-2-2)(-2-11)-2(-2)(4-3(-2))

Step 2: Simplify the expression within the parentheses: (-4)(-13)-2(-2)(4+6)

Step 3: Perform the calculations inside the parentheses: 52 - 2(-2)(10)

Step 4: Multiply -2 by 10: 52 - 2(-20)

Step 5: Multiply -2 by -20: 52 + 40

Step 6: Add the two values together: 92

Therefore, when а=-2, the expression (а-2)(а-11)-2а(4-3а) equals 92.