1.
the line of symmetry is x=2, means that the x coordinate of the vertex is x=2.
the point x=2 is the midpoint of the roots
and
.
so
Remark: in the x-axis, if c is the midpoint of a and b, then
2.
since
and
are roots
and
3.
equalizing:
in the left side factorize a, in the left side factorize 8:
![a[(x_1)^{2}-(x_2)^{2}] =8(x_1 -x_2)](https://tex.z-dn.net/?f=a%5B%28x_1%29%5E%7B2%7D-%28x_2%29%5E%7B2%7D%5D%20%3D8%28x_1%20-x_2%29)
in the right side use the difference of squares formula:
simplify by
substitute
with 4:
a=2
Answer: C)2
ratio of the 2 edges known: 2 / 1.5 = 1.333
2 * 1.333 = 2.66 = 2.7 cm
h = 2.7 cm
Answer: We will see in the next example how using the Quadratic Formula to solve an equation with a perfect square also gives just one solution. Solve 4{x}^{2}-20x=-25
Step-by-step explanation:
Answer:
im pretty sure its D. use assets
Step-by-step explanation:
hope this helps:)
