Evaluate Algebraic Expressions

for y = -4 and x = 3

-y -x

Given x = 3 and y = 4

|5xy -7| 

Given \(x\) = 3 and \(y\) = -4

$\frac{\left(y-0\right)}{\left(x-\left(-1\right)\right)}$

for a = -2 and b = 5

|a³ + b²|