Question

Simplify and answer in scientific notation.

Answer 1

3) a
(-3)^4
=(-3)*(-3)*(-3)*(-3)
minus * minus = plus
=(-3)*(-3) = 9
=9*9 = 81

Answer 2

3) b
2^3 * 2^(-4) / 2 ^(-2)
if power is transfered in numerator or denominator its sign changes.
so this will become..
2^3 *2^-4 * 2^ 2
if base is same then all the powers are added
2^(3-4+2)
=2^(1)
=2

Answer 3

thank u nirmalnema!!!!!!!! , but then what should i write in the small answer space i have under the question?

a) ?

b) ?

I have to make all the calculations in a paperbut i have a short space there in the online examen what should i answer from all that?

Answer 4

a)81
b)2

Answer 5

<3 thank u!

Answer 6

welcome