Answer:
what do you need help on?
(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0
Solve this quadratic for x:
x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5 (answer E)
Answer:
yes
Step-by-step explanation:
10:20=
5 times 2= 10
5 times 4= 20
2:4=
1 times 2=2
2 times 2= 4
1:2
Answer: m=
1
3
√2 or m=
−1
3
√2
Step-by-step explanation:
Answer: (1,0)
Step-by-step explanation: