## Algebra

If x=2,y=5 and z=4 Find the value of: [4 MARKS]

(i) x2x2

(ii) xzyz

(iii) zx

(iv) yx

(i) x2x2

(ii) xzyz

(iii) zx

(iv) yx

: Each option: 1 Mark

(i) x2x2=12x=12(2)=14

(ii) xzyz=xy=25

(iii) zx=42=16

(iv) yx=52=25

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