Question

PLEASE HELP ME ANSWER THIS:(

Answer 1

Answer:

#1

• y = x² - 8x - 20
• y = (x - 10)(x + 2),
• zero's are (10, 0) and (- 2, 0)

Vertex is:

• x = -8/-2 = 4, y = 4² - 8*4 - 20 = -36

Correct choice is A

#2

• x² + 1/3x = 4
• x² + 2*x*(1/6) + (1/6)² = 4 + 1/36
• (x + 1/6)² = 4 1/36

Correct choice is A

#3

• (-√-1) = -i
• i² = -1 ⇒ i²ⁿ = -1
• i²ⁿ⁺¹ = -i

Correct choice A or B

Answer 2

#1 is A

I hope this helps I don’t know the other ones