Factorisation (IMO- Mathematics Olympiad Class 8): Questions 32 - 39 of 63

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Question number: 32

» Factorisation

MCQ▾

Question

If x+4y=10 and x4y=8, then the value of xy is________.

Choices

Choice (4) Response
a.

94

b.

95

c.

92

d.

97

Question number: 33

» Factorisation

MCQ▾

Question

The factors of 117x2+42x+1 are________.

Choices

Choice (4) Response
a.

(13x+1)(9x+1)

b.

(13x1)(9x1)

c.

(13x5)(9x1)

d. None of the above

Question number: 34

» Factorisation

MCQ▾

Question

If (x+1x)=4 then (x2+1x2) equals________.

Choices

Choice (4) Response
a.

13

b.

14

c.

11

d.

15

Question number: 35

» Factorisation

MCQ▾

Question

Expansion of (a+2b+3c)2 is________.

Choices

Choice (4) Response
a.

a2+4b2+9c2+4ab+12bc+6ca

b.

a2+4b2+9c2

c.

a2+4b2+9c2+4ab+10bc+5ca

d. All of the above

Question number: 36

» Factorisation

MCQ▾

Question

The factors of x236y225 are________.

Choices

Choice (4) Response
a.

(x6y5)(x6y5)

b.

(x6+y5)(x6+y5)

c.

(x6y5)(x6+y5)

d.

(x6+y5)(x6y5)

Question number: 37

» Factorisation

MCQ▾

Question

2522427= ________.

Choices

Choice (4) Response
a.

1

b.

7

c.

6

d.

5

Question number: 38

» Factorisation

MCQ▾

Question

One factor of a2+2ab+b2c2 is________.

Choices

Choice (4) Response
a.

(abc)

b.

(a+b+c)

c.

(ab+c)

d. All of the above

Question number: 39

» Factorisation

MCQ▾

Question

One factor of a22abc2+b2 is________.

Choices

Choice (4) Response
a.

(a+b+c)

b.

(a+bc)

c.

(ab+c)

d. Question does not provide sufficient data or is vague

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