What is the value of the expression below when x = 3?
2
7x - 3x - 6

Answer:
48
Step-by-step explanation:
Given
7x² - 3x - 6 ← substitute x = 3 into the expression
= 7(3)² - 3(3) - 6
= 7(9) - 9 - 6
= 63 - 15
= 48