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Mathematics

Answered

what is the solution set of x^2-63=-2x

a.) (7,9)
b.) (-7,9)
c.) (-9,7)
d.) (0,21)

Answer :

Аноним Аноним

Today at 7:04 AM

x^2-63=-2x
x^2 + 2x - 63 = 0
(x+9)(x-7)=0

x+9 = 0
x= -9

x-7=0
x=7

answer is c.) (-9,7)

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