Question

See the screen shot below. Can anyone help me with this one

Answer 1

Top one

Explanation:

turn b² into a fraction of h, so b2h/h

Answer 2

For this case we have the following equation to find
`b_ {1}`

`b_ {1} = \frac {2A} {h} -b_ {2}\\\\`

If we want to find an equivalent equation, we do the following:

`(2A)/(h)-b_(2)=(2A*1-b_(2)*h)/(h)=(2A-b_(2)h)/(h)\\\\`

So, we have to:

`b_ {1} = \frac {2A} {h} -b_ {2} = \frac {2A-b_ {2} h} {h}\\`

Answer:

Option A