Answer:
18
Step-by-step explanation:
18 is the value of the equation when x = 7.
x² - 5x + 4
If x = 7
Substitute for 'x' in the given equation.
7² - 5(7) + 4
interpret the expression
(7x7) - 5(7) + 4
Solve the brackets
49 - 35 + 4
Simplify further
