Question

If a=7, then the value of a² - 3a is ______.

a) -7
b) 35
c) -28
d) 28​

Answer 1

-7

Explanation:

Given

a = 7

Since a = 7, then that would mean it the base of the exponent would be replaced to 7 to the second power.

So 7 x 7 = 49 ( multiplied twice itself)

--------------------------------------------

7×2-3×7=14-21 = -7

-----------------------------------------------------