CAIE IGCSE Mathematics Core C2.4 Indices Ii

Covered syllabus points

[Maximum number: 2]

Simplify.

(a)

$y^{3} \div y^{5}$

[ 1 ]

$y^{-2}$ or $\frac1{y^2}$ final answer

(b)

$7 x^{0}$

[ 1 ]

[Maximum number: 1]

$\frac{7^{15}}{7^x}=7^9$
Find the value of x.
x=

[Maximum number: 21]

Simplify.

(a)

$n^5\times n$

[ 19 ]

$n^6$ final answer

(b)

$\frac{8x^6}{2x^2}$

[ 2 ]

$4x^4$ final answer
B1 for $kx^4$ or $4x^h$ final answer, or for correct answer seen then spoiled

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