Answer:
<u>Solved only ticked ones</u>
- 4a² + 49b² = (2a + 7b)² - 28ab = 11² - 28*2 = 65
- 4x² + 9y² = (2x + 3y)² - 12xy = 12² - 12*6 = 72
- 4x² + 9y² = (2x - 3y)² + 12xy = 2² + 12*8 = 100
- 16x² + 25y² = (4x - 5y)² + 40xy = 6² + 40*8 = 356
Answer: 8
Step-by-step explanation: the given expression is 2n-3
so when n=1, we will get, 2(1)-3=2-3=-1
when n=2, we will get, 2(2)-3= 4-3=-1
when n=3, we will get 2(3)-3= 6-3=3
when n=4, we will get 2(4)-3 = 8-3=5
so the required result of expansion is -1+1+3+5=8
answer is 8.
hope that helped!
B. (3, -7)
When the equation is graphed, the vertex is at the point (3,-7). I hope this helps!!!
Answer:
rip
Step-by-step explanation:
