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A) Simplify

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Sapumal Senadeerage Sasanka Sagara
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12 views3 pages

A) Simplify

contact us for the full version +94788943818 S$S$ production

Uploaded by

Sapumal Senadeerage Sasanka Sagara
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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1.

27𝑥 7 𝑦 3
a) Simplify (3𝑥𝑦)2

…………………………………………..

(1)

b) Expand and simplify (2𝑥 + 5)(𝑥 − 3)

…………………………………………..

(2)

2. Here is a right angled triangle

Diagram NOT accurately drawn

(𝑥 + 4)
(𝑥 + 3)

(𝑥 + 2)
Calculate the value of 𝑥

𝑥 = …………………………………………..

(3)
3. Kane had 35 pens all together those are identical in size, weight, and shape except color.
5
Probability of taking out a red pen from the population is given that and the probability of taking out a
7
1
blue pen from the population is given that5. Others are green pens.
a) Work out the number of red pens in the population.

…………………………………………..

(2)

If Kane took out 2 green pens from the population

b) Work out the probability of taking out a green pen from the population.

…………………………………………..

(2)

4. The diagram shows an upper view of a garden. AD is the diameter of the garden (semi-circle).

A D Diagram NOT accurately drawn


AD is 14m and the whole garden is covered by two types of grasses. AB, BC, and CD are semi circles. S is
covered by a grass where costs $5 per square meter and the remaining part is covered with another type of
grass where $8 costs per square meter.

Calculate the total cost to cover the garden with grasses.

…………………………………………..

(4)

5. Plot each functions in same graph sheet. 𝑦 = 𝑥 2 − 𝑥 + 1, 𝑦 = 𝑥 + 4


Hence solve 𝑥 2 − 2𝑥 − 3 = 0

…………………………………………..

(4)

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