Answer:
m = +/- 12
Step-by-step explanation:
A quadratic function has only one x-intercept when the discriminant is equal to 0. The discriminant is b^2 - 4(a)(c).
When we plug in what we know, we have:
m^2 - 4(18)(2) = 0.
Then using algebraic properties, solve for m.
m^2 - 144 = 0
m^2 = 144
m = +/- 12
When you plug in positive or negative 12, and then factor you will see that it comes out to a difference of squares, proving that there is only one x-intercept.
The pattern is multiply by -4. So to find the next number. Multiply the previous one by -4.
-\frac{22}{3}=-7.33333 <span>Steps<span>$-\frac{22}{3}$</span></span>
<em>To find the answer, just do the inverse. That is, do 4×2. 4×2=8 and 8÷4=2. So A=8.</em>