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11 February, 15:54

Find the difference. (9a^4+2a^2+5) - (16a^4-7a^2+1)

A. 25a^4-5a^2-4

B. - 7a-5a^2+6

C. 25a^8+9a^4+6

D. - 7a^4+9a^2+4

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  1. 11 February, 16:17
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    (9a^4+2a^2+5) - (16a^4-7a^2+1)

    = 9a^4 + 2a^2 + 5 - 16a^4 + 7a^2 - 1

    =-7a^4 + 9a^2 + 4

    answer is D. - 7a^4+9a^2+4
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