You should know that:
(a+b)(a+b)(a+b)
=a(a+b)(a+b)+b(a+b)(a+b)
=a(a²+2ab+b²)+b(a²+2ab+b²)
=a³+2a²b+ab²+a²b+2ab²+b³
=a³+3a²b+3ab²+b³
-----------------
If a=5x and b=-4y
(5x+(-4y))³
=(5x-4y)³
=(5x)³+3(5x)²(-4y)+3(5x)(-4y)²+(-4y)³
=125x³+3(25x²)(-4y)+15x(16y²)-64y³
=125x³+75x²(-4y)+240xy²-64y³
=125x³-300x²y+240xy²-64y³
Answer:
y>-15/2x+10
Step-by-step explanation:
15x+2y>20
First step: Move the 15x to the other side by subtracting on both sides. 2y>-15x+20
Second step: Divide everything by 2. y>-15/2x+10
I think it'd be better if you gave us some sort of diagram with it?
It goes on forever basically, as it can't be expressed as a fraction.
Answer:
90 but since its a triangle but im
pretty sure you have to divide by 2 so 45 i think
