The result is
9
a
2
−
16
The reason is the following:
The problem is an example of a notable product: "the sum multiplied by the diference is equal to the difference of squares", that is to say:
(
a
+
b
)
⋅
(
a
−
b
)
=
a
2
−
b
2
.
By applying this to our question, we obtain that:
(
3
a
−
4
)
⋅
(
3
a
+
4
)
=
(
3
a
)
2
−
(
4
)
2
=
9
a
2
−
16
.
Answer:
y = -2+
and y = -2 - combined, or 
Step-by-step explanation:
substitute y for x and x for y
this is technically the inverse but I will simplify further
x = 
± = y+2
y = -2±
y = -2+ and y = -2 - combined
Answer:
4 Hours
Step-by-step explanation:
hope that helped
The correct answer is 8.3 repeated.
25 divided by 3 is 8.3 repeated and so is the rest so it is obvious to say that 8.3 repeated is the correct answer.
Answer:
112.41
Step-by-step explanation:
9 percent of 1,249 is 112.41
