9х²+6х-8=0
D= 6²- (-8)×9×4= 36+288= √324 (+18)
x1= (-6+18)/18= 2/3
x2= (-6-18)/18= -4/3
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Решение прикреплено в фотографии ниже9х²+6х-8=0
D= 6²- (-8)×9×4= 36+288= √324 (+18)
x1= (-6+18)/18= 2/3
x2= (-6-18)/18= -4/3