Since its roots are -4 and 2 and a = 1 [The coefficient of x^2] we know that x^2 + bx + c = (x - (-4)) (x-2)=(x+4)(x-2) = 0. Using the distributive property we get, x^2 + 2x - 8 = 0. By equating coefficients (common strategy for partial fractions and undetermined coefficient method of solving ODE), we get b = 2 and c = -8.
Hope this helps :) If you spot a mistake in my work or have a question comment down below.
Answer:
b
Step-by-step explanation:
Answer(s):
1: -6
2: 31/3=10.3(with repeat)=10 1/3
3: 0
4: 21/4=5.25=5 1/4
5: -4
6: 6
7: 3
8: 2
9: -13
10: -7
Hope I helped! :)
The area of a circle is given by:
Where r is the circle's radius. In this case we have a diameter of 8cm so the radius 4cm. Using pi=3.14 we have that the area of the circle is:
So the area is 50.24 cm^2.
(8r+3s)(8r-3s) dont have working but noticed that it is the difference of two squares
