Answer:
![4x^3-7x^2-23x-10](https://tex.z-dn.net/?f=4x%5E3-7x%5E2-23x-10)
Step-by-step explanation:
So we have the expression:
![(4x+5)(x^2-3x-2)](https://tex.z-dn.net/?f=%284x%2B5%29%28x%5E2-3x-2%29)
Distribute. Multiply (4x+5) to each term:
![(x^2)(4x+5)+(-3x)(4x+5)+(-2)(4x+5)](https://tex.z-dn.net/?f=%28x%5E2%29%284x%2B5%29%2B%28-3x%29%284x%2B5%29%2B%28-2%29%284x%2B5%29)
Distribute:
![=(4x^3+5x^2)+(-12x^2-15x)+(-8x-10)](https://tex.z-dn.net/?f=%3D%284x%5E3%2B5x%5E2%29%2B%28-12x%5E2-15x%29%2B%28-8x-10%29)
Combine like terms:
![=(4x^3)+(5x^2-12x^2)+(-15x-8x)+(-10)](https://tex.z-dn.net/?f=%3D%284x%5E3%29%2B%285x%5E2-12x%5E2%29%2B%28-15x-8x%29%2B%28-10%29)
Add and simplify:
![=4x^3-7x^2-23x-10](https://tex.z-dn.net/?f=%3D4x%5E3-7x%5E2-23x-10)
And this is in descending order, so it's in standard form.
The measure of the third angle would be 159 degrees
Answer:
B
Step-by-step explanation:
1 is 100% so increasing it by 12% means adding 0.12 to it
Answer:
20
Step-by-step explanation:
you've got to do the inside parenthesis first then multiple with 3 and finally add 8
Yes it should bring it up to a C or maybe it will be a 70 or 75