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Let alpha1,alpha2,........alpha7 be the ...

Let `alpha_1`,`alpha_2`,........`alpha_7` be the roots of the equation `x^7+3x^5-13x^3-15x=0 and |alpha_1|ge|alpha_2|ge.....ge|alpha_7|`.Then `alpha_1 alpha_2-alpha_3alpha_4+alpha_5alpha_6` is equal to..............

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JEE MAINS PREVIOUS YEAR-JEE MAINS 2023 JAN ACTUAL PAPER-Question
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