If x = 2 , y = 5 a n d z = 4 Find the value of: [4 MARKS] (i) x 2 x 2 (ii) x z y z (iii) z x (iv) y x

: Each option: 1 Mark (i) x 2 x 2 = 1 2 x = 1 2 ( 2 ) = 1 4 (ii) x z y z = x y = 2 5 (iii) z x = 4 2 = 16 (iv) y x = 5 2 = 25

If x=2,y=5 and z=4 Find the value of: [4 MARKS] (i) x2x2 (ii) xzyz

Question

x = 2, y = 5 a n d z = 4

Find the value of: [4 MARKS]
(i)

\frac{x}{2 x^{2}}

(ii)

\frac{x z}{y z}

(iii)

z^{x}

(iv)

y^{x}

Answer:
:
Each option: 1 Mark
(i)

\frac{x}{2 x^{2}} = \frac{1}{2 x} = \frac{1}{2 (2)} = \frac{1}{4}

(ii)

\frac{x z}{y z} = \frac{x}{y} = \frac{2}{5}

(iii)

z^{x} = 4^{2} = 16

(iv)

y^{x} = 5^{2} = 25

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