A= y*z- w*(z-x)=10*5-5*(5-3)=50-5*2=50-10=40 in.^2
B is the answer
Completing the squares and comparing to the standard equation, it is found that the diameter of the circle is of units.
<h3>What is the equation of a circle?</h3>
- The equation of a circle of center and radius r is given by:
- The diameter is twice the radius, that is, .
In this problem, the <em>equation </em>is:
Then:
Completing the squares:
Hence:
Hence, the diameter is:
You can learn more about the equation of a circle at brainly.com/question/16505663
<span>the correct equation is
- 4j² + 3j - 28 =0
ax² + bx + c,
a = -4, b=3 c =- 28.
The discriminent D = b² - 4.a.cD = 3² - 4(-4)(-28)D = -439
If D ≥ 0 there are either 2 roots or one double if = 0)if D< 0, there are no real roots (but 2 imaginary roots)Since D < 0, then there is no real roots
The answer there is no real roots</span>
The theorem is: a^2 - b^2 = (a+b) (a-b)
So, let's do this:
64x^2 - 49=
(8x)^2 - (7)^2=
(8x+7) (8x-7)