IMO- Mathematics Olympiad Class 8: Questions 650 - 656 of 1029

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Question number: 650

» Factorisation

MCQ▾

Question

The factors of 9x213x+5 are________.

Choices

Choice (4) Response

a.

(9x+5)(x1)

b.

(9x+5)(x+1)

c.

(9x5)(x1)

d.

(9x5)(x+1)

Question number: 651

» Factorisation

MCQ▾

Question

Reducing the expression aa+bbab to lowest terms, we get

Choices

Choice (4) Response

a.

a(a+b)(ab)

b.

a2(a+b)(ab)

c.

a2b

d.

(ab)22b2(a+b)(ab)

Question number: 652

» Factorisation

MCQ▾

Question

Expansion of (ab+2c)2 is________.

Choices

Choice (4) Response

a.

a2+b2+4c2+2ab+4bc+4ca

b.

a2+b2+4c22ab4bc+4ca

c.

a2+b2+4c2

d.

None of the above

Question number: 653

» Factorisation

MCQ▾

Question

If (x2+2x+4)(x22x+4)=a2b2 , then a = ________.

Choices

Choice (4) Response

a.

x2+4

b.

2x

c.

x24

d.

2x+1

Question number: 654

» Factorisation

MCQ▾

Question

Evaluation of (9.7)2(0.3)2 is________.

Choices

Choice (4) Response

a.

45

b.

35

c.

94

d.

90

Question number: 655

» Factorisation

MCQ▾

Question

One factor of a22ac+c2b2 is________.

Choices

Choice (4) Response

a.

(acb)

b.

(a+cb)

c.

(a+b+c)

d.

Question does not provide sufficient data or is vague

Question number: 656

» Factorisation

MCQ▾

Question

If (x1x)=2 then (x2+1x2) equals________.

Choices

Choice (4) Response

a.

6

b.

4

c.

5

d.

1

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