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21-09-2020
Mathematics

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What are the x-intercepts of the functions fx)=-4(x+3)(x-9) ?

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Аноним Аноним

21-09-2020

Answer:

x=9 or -3

Step-by-step explanation:

used quadratic formula

standard form: ax^2 + bx +c

quadratic formula:

x= -b +- square root of b^2 -4(a)(c) divided by 2(a)

Google quadratic equation for more

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