Answer:
Step-by-step explanation:
Plug in the numbers & solve for 5x, eventually eliminating the 5 to solve for x, which the variable should be on the left side, always.
-23
x^2 + 5x - 19; x = -4
Replace x with 4 in the expression and evaluate the numerical expression.
x^2 + 5x - 19 =
= (-4)^2 + 5(-4) - 19
= 16 - 20 - 19
= -23
