jayceecarter19 jayceecarter19

14-09-2020
Mathematics

contestada

Choose the solutions to the quadratic equation x^2-8x-9=0

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clara856 clara856

14-09-2020

Step-by-step explanation:

x²-8x-9=0

x²-9x+1x-9=0

x(x-9)+1(x-9)=0

(x+1)(x-9)=0

x+1=0 x-9=0

x=-1 x=9

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