Answer:
someone will be with you in a moment
Step-by-step explanation:
Answer:
Im sorry but I am not really sure myself ! I hope you find or found your answer already !
Step-by-step explanation:
Answer: 70
Step-by-step explanation:
12*10 = 120-50 = 70
Answer:
Step-by-step explanation:
(a - b)² = a² + 2ab + b²
Area of square frame =side²
= (2b - 1)²
= (2b)² - 2*2b * 1 + 1²
= 4b² - 4b + 1