Question

What is the value of expression?

5−8 • 5−4

A.
532

B.
54

C.
5−4

D.
5−12

Answer 1

use `^` for exponents

Answer 2

when we multiply same bases we should `ADD` their exponents
\[\huge\rm x^m \times x^n =x^{m+n}\]

Answer 3

Ok

Answer 4

So C.

Answer 5

nope
\[\huge\rm 5^{-8+(-4)}\]
both exponents are negative

Answer 6

so 5^{??}
-8+(-4)= ?

Answer 7

12?

Answer 8

no both numbers are negative so answer would be negative
-2-2 isn't 4
-2-2 = `-4`

Answer 9

1 times -4 = ?