Answer:
b2+11b-42 = (b+14)(b-3) when factored
Step-by-step explanation:
Answer:
X² - 5 = 0
x² = 5
square on both side
x = 5²
x = 25
May mine aswer might be wrong please retrify but as per my point of view it will be write
Answer:
Therefore the friends will have to buy 511 feet of fence (rounding up) or 510 feet of fence ( to the nearest foot).
Step-by-step explanation:
i) perimeter of rectangular yard = 319 feet
ii) perimeter of yard of friends 
iii) Therefore the friends will have to buy 511 feet of fence or 510 feet of fence ( to the nearest foot).