Answer:
14) x = 5, and x = -5
16) x = 4 + √10 and x = 4 - √10
Step-by-step explanation:
14)
x^2 - 25 = 0
Add 25 to both sides
x^2 = 25
Take square root each side
x = 5, and x = -5
16)
x^2 - 8x = -6
Add (-4)^2 to both sides
x^2 - 8x + (-4)^2 = -6 + (-4)^2
Simplifying
x^2 - 8x + 16 = - 6 + 16
(x - 4)^2 = 10
Take square root each side
x - 4 = + - √10
Add 4 to both sides
x = 4 + √10 and x = 4 - √10
