Answer:
49/4
Step-by-step explanation:
x^2 + 7x = 4
Take the coefficient of x
7
Divide by 2
7/2
Square it
(7/2) ^2 = 49/4
Add this to each side
x^2 + 7x +49/4= 4+49/4
What is the underlines digit?
Answer:
4.5km
Step-by-step explanation:
2cm=1km
9cm=xkm
so to get from 2 to 9 all you do is multiply by 4.5 so do this the km and you will get 4.5km :)
Answer:
x - 5y - 6
Step-by-step explanation:
- 6 + 4y - ( - x + 9y) ← distribute parenthesis by - 1
= - 6 + 4y + x - 9y ← collect like terms
= x - 5y - 6
