Advertisements
Advertisements
प्रश्न
(–7)–4 × (–7)2 = (–7)–2
विकल्प
True
False
Advertisements
उत्तर
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
संबंधित प्रश्न
The value of 35 ÷ 3–6 is ______.
Express as a power of a rational number with negative exponent.
`(((-3)/2)^-2)^-3`
Planet A is at a distance of 9.35 × 106 km from Earth and planet B is 6.27 × 107 km from Earth. Which planet is nearer to Earth?
Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression 3–t. What fraction of substance remains after 7 half-lives?
Find a single machine that will do the same job as the given hook-up.
a (× 23) machine followed by (× 2–2) machine.
For hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.
For hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.
For hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.
If a = – 1, b = 2, then find the value of the following:
ab – ba
Simplify:
`[(1/2)^2 - (1/4)^3]^-1 xx 2^-3`
