W² - 49 = 0
w² - 7² = -
(w-7)(w+7)=0
w -7=0 , or w + 7 =0
w=-7, w=7
Answer: -7, 7.
Answer:
B)
Step-by-step explanation:
- Rational number: can be expressed as a ratio of two integers
- Irrational number: cannot be expressed as a ratio of two integers



Answer: True.
Step-by-step explanation: