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Express (x^2+5x+12)(x^2-5x+12) as a different of two square |
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Answer» (x^2)^2 - (5x+12)^2 [(a+b)(a-b)=a^2-b^2] x^4 - [(5x)^2 + (12)^2 + 120X] x^4-25x^2-144-120x |
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