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(s + t)2 vs s2 + t2 [#permalink]
15 Apr 2018, 04:42

Expert's post

00:00

Question Stats:

92% (00:10) correct
7% (01:06) wrong based on 13 sessions

Quantity A

Quantity B

\((s + t)^2\)

\(s^2 + t^2\)

A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given.

Re: (s + t)2 vs s2 + t2 [#permalink]
29 Apr 2019, 11:16

Expert's post

sandy wrote:

Quantity A

Quantity B

\((s + t)^2\)

\(s^2 + t^2\)

A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given.

Re: (s + t)2 vs s2 + t2 [#permalink]
29 Apr 2019, 11:19

Expert's post

sandy wrote:

Quantity A

Quantity B

\((s + t)^2\)

\(s^2 + t^2\)

A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given.

Drill 1 Question: 9 Page: 507

APPROACH #2: Testing values

Case i: s = 0 and t = 0. We get: QUANTITY A: (s + t)² = (0 + 0)² = 0² = 0 QUANTITY B: s² + t² = 0² + 0² = 0 + 0 = 0 In this case, the two quantities are equal

Case ii: s = 1 and t = 2. We get: QUANTITY A: (s + t)² = (1 + 2)² = 3² = 9 QUANTITY B: s² + t² = 1² + 2² = 1 + 4 = 5 In this case, the Quantity A is greater

Answer: D

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Re: (s + t)2 vs s2 + t2
[#permalink]
29 Apr 2019, 11:19