Answer:
b=-2aH
Step-by-step explanation:
H=-b/2a
Apply cross multiplication
H×2a=-b
2aH=-b
In the question you are to find positive b not negative b so you have to take negative b to the left hand side of the equation to become positive b and take 2aH to the right hand side to become -2aH
therefore b=-2aH
3.45
you have to do tihis then that
x=2.5
Put the like terms together, like so:
10x-2x=34-14
The result is this:
8x=20
Simplify to get:
a=18
