(a - b)2 + 2ab = ? | Simplification Questions & Answers

Q:

The value of cos0 deg is

A) 0	B) infinite
C) not defined	D) 1

Answer & Explanation Answer: D) 1

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0 555

Q:

If a/b = 1/4, b/c = 1/8 and a = 2 then the value of c is -

A) 8	B) 16
C) 32	D) 64

Answer & Explanation Answer: D) 64

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Q:

The value of (0.00000729/0.00000027) is

A) 0.27	B) 0.027
C) 2.7	D) 27

Answer & Explanation Answer: D) 27

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0 512

Q:

If √5 = 2.236, then √5/2 is

A) 1.851	B) 1.118
C) 2.236	D) 1.782

Answer & Explanation Answer: B) 1.118

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Q:

If 2x + 3 = 9 then find the value of 3x + 2

A) 12	B) 16
C) 13	D) 11

Answer & Explanation Answer: D) 11

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Q:

In ∆PQR measure of angle Q is 90 deg. If cosecP = 17/15, and PQ = 0.8cm, then what is the length (in cm) of side QR?

A) 1.7	B) 2
C) 2.5	D) 1.5

Answer & Explanation Answer: D) 1.5

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Q:

If $tanα = \sqrt{2} + 1$ , then the value of $tanα - cotα$ is

A) √2 - 1	B) 2√2
C) 2	D) 1

Answer & Explanation Answer: C) 2

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2 20207

Q:

The square root of 6084 is

A) 82	B) 78
C) 74	D) 76

A) a2 - b2	B) a2 + b2
C) a2 - 4ab + b2	D) a2 - 2ab + b2

${(a - b)}^{2} + 2 ab = ?$

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