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cheervolley
06.10.2019 •
Mathematics
Solve the equation. check for extraneous solutions. type your answers in the blanks. show your work.
x = or
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Ответ:
16x^2+24x+9=81+36x+4x^2 subtract the right side from both sides
12x^2-12x-72=0 now we can factor
12(x^2-x-6)=0
12(x^2+2x-3x-6)=0
12(x(x+2)-3(x+2)=0
12(x-3)(x+2)
So:
x= -2 or 3
Ответ: