chicagochica5
Solve the equation using square roots.
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chicagochica5
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hartnn
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Add 9 to both sides. what u get ?
chicagochica5
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My choices:
A. –3, 3
B. –9, 9
\[-\sqrt{3}, \sqrt{3}\]
D. no real number solutions
hartnn
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Add 9 to both sides. what u get ?
chicagochica5
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C?
hartnn
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Add 9 in both sides of x^2-9 =0
what u get?
u don't get direct answers here, sorry.
chicagochica5
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@hartnn, I dont know how to... I get 81 - 9 = 0 which im pretty sure is wrong
hal_stirrup
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there after the answer ONLY!!
hartnn
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how did u get 81 ?
chicagochica5
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\[9^{2}\]
hartnn
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why did u put x=9 ?
chicagochica5
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what?
hartnn
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u got 81 by 9^2 but why 9^2 ? keep it as x^2
u have x^2-9=0
Adding 9 to both sides,
x^2-9+9=0+9
x^2+0=9
x^2=9
can u solve this ?
Lovie03
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@hartnn help me for this problem Write an equation with the variable on each both side of the equal sign, at least one fractional cofficient, and a solution of-6.
Thank you
hartnn
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@Lovie03 i answered that, check it.
Lovie03
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how you get that
hartnn
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@chicagochica5
x^2=9
can u solve this ?
hartnn
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taking square root on both sides,
x= +3 or x=-3
chicagochica5
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@hartnn, im sorry I do not understand what to do or how to solve