Answer:
Step-by-step explanation:
2x+3y=12
÷2. ÷2
X+3y= 6
÷3. ÷3
X+y= 2
Y-(-2)= -2/3(x-6)
3y+6= -2x +12
2x +3y +6=0
45/100 is less than 1/2
If you increase 1/2 to /100 it becomes 50/100
Perfect squares follow this pattern:
So, two terms must be perfect squares of two certain roots. If so, the remaining term must be twice their product. Let's analyse the trinomials one by one:
1) x^2 is the square of x. -64 is not a perfect square. So, the trinomial is not a perfect square.
2) 4x^2 is the square of 2x. 9 is the square of 3. The remaining term, 12x, is indeed twice their product. So, we have
3) x^2 is the square of x. 100 is the square of 10. The remaining term, 20x, is indeed twice their product. So, we have
4) x^2 is the square of x. 16 is the square of 4. The remaining term, 4x, is not twice their product (it's only the product of 4 and x, so it should be doubled). So, this trinomial is not a perfect square.