Answer: 0
Step-by-step explanation: 21/7=3, so there is no change.
Answer:
10x²+3xy+6x-y²+3y
Step-by-step explanation:
(2x+y)(5x-y+3) steps
2x(5x-y+3)=10x²-2xy+6x
y(5x-y+3)= 5xy-y²+3y
add: 10x²-2xy+6x+5xy-y²+3y
10x²+3xy+6x-y²+3y
Answer:
y = 1/3
Step-by-step explanation:
(3y-1)² = 0
First is square root on both sides.
√(3y-1)² = √0
3y -1 = 0
3y = 1
y = 1/3
Well, the number is more than 8, but less than 9, so it must be between 8 and 9