Question

1)Solve. (x – 5)2 = 4.


A)x = 9 and x = 1
B)x = 9 and x = 11
C)x = 7 and x = 3
D)x = 3 and x = 11

2)Solve. 3x2 – 75 = 0
A)x = 5
B)x = 3 and x = 25
C)x = 25
D)x = 5 and x = –5

3)What is the value of the discriminant of 2x2 + 4x – 2 = 0?


A)16
B)0
C)32
D)–20

Just the answers please since I'm in a hurry

Answer 1

If that's a "squared" (power of 2) in the first one, it's
x-5 = 2 or -2
so
x=7 or x = 3 (C)

Answer 2

For (2) it's D.

Answer 3

For (3) it's C.

Answer 4

questions?

Answer 5

No thank you :)

Answer 6

welcome