Advertisements
Advertisements
Question
(–7)–4 × (–7)2 = (–7)–2
Options
True
False
Advertisements
Solution
This statement is True.
Explanation:
LHS = (–7)–4 × (–7)2
Using law of exponents,
am × an = (a)m + n ...[∵ a is non-zero integer]
∴ (–7)–4 × (–7)2 = (–7)–4 + 2
= (–7)–2
LHS = RHS
APPEARS IN
RELATED QUESTIONS
The value of `(2/5)^-2` is ______.
If x be any non-zero integer, then x–1 is equal to ______.
For any two non-zero rational numbers x and y, x4 ÷ y4 is equal to ______.
55 × 5–5 = ______.
[2–1 + 3–1 + 4–1]0 = ______.
50 = 5
Find the value of x so that `(5/3)^-2 xx (5/3)^-14 = (5/3)^(8x)`
If `(5^m xx 5^3 xx 5^-2)/5^-5 = 5^12`, find m.
The cells of a bacteria double in every 30 minutes. A scientist begins with a single cell. How many cells will be there after 12 hours?
By what number should (–15)–1 be divided so that the quotient may be equal to (–5)–1?
