i need the answer to this lol
Answer:
x = √11
Step-by-step explanation:
2x² - 1 = 21
add 1 to both sides
2x² - 1 + 1 = 21 + 1
simplify
2x² = 22
x² = 22 / 2
x = √11
( − 5 ) ( + 5 ) ( 2 + 2 5 )
Answer:
31/20 or 1+11/20
Step-by-step explanation:
common denominator is 20
16/20 + 15/20 = 31/20 = 1+11/20
