Lena starts to use the standard algorithm to solve 39\times439×439, times, 4. Her work is shown below. \begin{aligned} \overset{\blueD{m}}3\overset{}9& ;\\ \underline{{} \times \phantom{~} 4}&\\ 6& \end{aligned}

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

20%

step-by-step explanation: