Step-by-step explanation:
(2a+3b)(4a²-6ab+9b²
(2a+3b){(2a)²-2a×3b+(3b)²}
Because (a³+b³)=(a+b)(a²-ab+b²)
Therefore,
(2a+3b){(2a)²-2a×3b+(3b)²}
=(2a)³+(3b)³
By substituting the values , we get
- (2a)³+(3b)³
- (2×3)³+(3×(-5))³
- 6³+(-15)³
- 216+(-3375)
- 216-3375
- -3159
The answer is -5 hope this works
Acute angle: Angle that is less than 90 degree
obtuse: Angle that is greater than 90 degree
right angle: Angle that is exactly 90 degree
straight: Angle that is 180 degree ( line)
Good luck :)
Answer:
n = - 
Step-by-step explanation:
Given
- 8n = 13 ( divide both sides by - 8 )
n = 
= -
