Answer:
x = -13
Step-by-step explanation:
-5(x - 1) = -7(x + 3)
Distribute on both sides.
-5x + 5 = -7x - 21
Add 7x to both sides.
2x + 5 = -21
Subtract 5 from both sides.
2x = -26
Divide both sides by 2.
x = -13
Answer:
7
Step-by-step explanation:
Simple...
you have:
1.) -8x-16 --->>>
Factor out a -8 -->>
-8(x+2)
2.)9d+15db --->
Factor out 3d -->
3d(3+5b)
3.) 2a-9ax-->>
Factor out -a -->
-1a(9x-2)
Thus, your answer.
Answer:
1)
2)0
Step-by-step explanation:
for part 1:
Given cos(x) - cos^3(x)
= cos(x) (1- cos^2(x))
Using the identity 
= cos(x)sin^2(x)
for part 2:
given
=
Using the identity cos(a)cos(b) + sin(a)sin(b)= cos(a-b)
=
=
=
=0!