Applying properties of exponents in exercise, use the properties of exponents to simplify the expression. see example 1.
(a) 5^3/5^6
(b) (1/5)^-2
(c) (81/2)(21/2)
(d) (32^3/2)(1/2)^3/2

(a) 1/125 or 1/5³

(b) 5² or 25

(c)  3⁴×7/2²

(d)  2⁶ or 64

Step-by-step explanation:

Laws of Indices:

First law:

Multiplication law ⇒ xᵃ × xᵇ = xᵃ⁺ᵇ

Second Law:

Division law ⇒ xᵃ ÷ xᵇ = xᵃ⁻ᵇ

Third Law:

Negative Index ⇒ x⁻ᵃ = 1/xᵃ

Forth Law:

Root power ⇒ x¹/² = √x

Fifth Law :

Fractional index ⇒ xᵃ/ᵇ =

(a) 5³/5⁶

5³/5⁶ = 5³⁻⁶ ( first law)

⇒ 5⁻³ = 1/5³ ( Third law)

⇒ 1/125

(b) (1/5)⁻²

⇒ 5⁽⁻¹⁾⁽⁻²⁾  ( Third law)

⇒ 5²

⇒ 25

(c) (81/2)(21/2)

⇒ 81/2 × 21/2

⇒ 3⁴×7/2²

(d) (32³/²)(1/2)³/²

⇒( 2⁽⁵⁾⁽³/²⁾)(2⁽⁻¹⁾⁽³/²⁾)

⇒ 2¹⁵/² × 2⁻³/²

⇒ 2⁽¹⁵⁻³⁾/² (first law)

⇒ 2¹²/²

⇒ 2⁶

⇒ 64

did you get the answer yet?

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w