Step-by-step explanation:
15a)
Subtract both sides by 21

15b)
7 and -3 multiply to -21 and add to 4
The factors are (x+7)(x-3)
15c)
x+7 =0
x=-7
x-3=0
x=3
Answer:
x = 7/9
i hope this is the answer you are looking for
Step-by-step explanation:
(a), (b), (d) and (f) are correct statements
Answer:
Circle basic concepts: Chords, arcs, tangents, cyclic quadrilateral, angle subtended by a chord and secant of a circle with examples and exercise. Contents are, Definition of a circle.
X-intercept: (-9,0)
y-intercept: (0,3,)