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Question

Factorize a2x2+(ax2+1)x+a by the grouping method

A
(ax3+1)(ax)
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B
(ax3+6)(a+x)
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C
(ax2+1)(a+x)
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D
(ax2+6)(a+x)
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Solution

The correct option is D (ax2+1)(a+x)
a2x2+(ax2+1)x+a
=a2x2+ax3+x+a
=ax2(a+x)+1(a+x)
=(a+x)(ax2+1)

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