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0 to 9. 1. Obtain all zeroes of x4 -3x3-7x2 + 9x +12 iftwo of its zeroes are +3. Sum of zeroes is che quadratic polynom

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16 X = 253 pelt. X²-3=0 which is one of roots. Dividing (x2-3) by the one the equ. X² -3x - 4 X²-3 | x4 - 3x3 -7x² + 9x+12 w do X4 3x ? I – 3x² - 4x2 + 9x +12 -3x3 +9x & Had to 1 - 4x2 # 12 - 4x2 & 12 sell x2-3x -4.20 . (x-4) (x+1)=0 Its zroces are th3,4, s Sum ob Zeroes = + = 8/3 +4-1
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