The general form of the quadratic equation is :
The discriminant is :
And the general solution is :
![x=\frac{-b\pm\sqrt[]{D}}{2\cdot a}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b%5Cpm%5Csqrt%5B%5D%7BD%7D%7D%7B2%5Ccdot%20a%7D)
So, there are 3 situations for D
1. D = 0
So, the roots of a quadratic equation are two similar roots
2. D > 0
so, roots of a quadratic equation are two different roots
3. D < 0
so, roots of a quadratic equation are not real, two comlex roots
Answer:
90 and 71 or 80.5
Step-by-step explanation:
find middle two numbers
add them together
divide by 2
Answer:
B
Step-by-step explanation:
The square of y would look like y^2 and decreased means subtraction
So the equation now y^2-
the quotient of 8 and y would be 8/y
The full equation is y^2-8/y
Answer:
<em>30(30 - x) = 540 </em>
Step-by-step explanation:
A = l w
<u><em>30(30 - x) = 540</em></u>
Answer:
Albert is 24. Albert's father is 48
Step-by-step explanation:
