Question

Simplify -b/2a where a =-8 and b =-1

Answer 1

The correct value of this algebraic expression is -1/16

Given the expression,
`\large \sf (-b)/(2a)`, let's just: change the letters to the numbers and then perform the given operations.

• According to the rules of signals, we will have to:

*Equal signs will be positive ⇒ (-) (-)= + & (+) (+) = +

*Different signs will be negative ⇒ (-) (+) = - & (+) (-) = -

`\\\large \sf (-b)/(2a) , \ a=-8 \ , \ b=-1`

`\large \sf (-(-1))/(2 \cdot (-8))`

`\large \sf (1)/(2 \cdot (-8))`

`\large \sf (1)/(-16)`

`\blue{\boxed{\large \sf -(1)/(16) }}\\`

Therefore, the final answer to this simplification will be -1/16