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11 Dec 2020, 09:15
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
92% (00:34) correct
8%
(00:54)
wrong
based on 53
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Which of the following expressions is a simplified form of \((–2x^2)^4\) ?
(A) \(16x^8\)
(B) \(8x^6\)
(C) \(–8x^8\)
(D) \(–16x^6\)
(E) \(–16x^8\)
(A) \(16x^8\)
(B) \(8x^6\)
(C) \(–8x^8\)
(D) \(–16x^6\)
(E) \(–16x^8\)
11 Dec 2020, 20:27
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Bunuel
Algebraic
\((-2x^2)^4=(-)^4*2^4*(x^2)^4=16*x^{2*4}=16x^8\)
Substitute
Put x=1
\((-2x^2)^4=(-2*1^2)^4=(-2)^4=16\)
Only A gives 16 as the answer.
ShankSouljaBoi
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12 Dec 2020, 00:47
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Bifurcating--- (-2)^4 * (x^2)^4 = 16 * x^8 .... A
