SOLUTION: a) Solve 3x^2 = 21 "what are the solutions??" b) find the x intercepts of f(x) = 3x^2 - 21 "the x intercepts are?"
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-> SOLUTION: a) Solve 3x^2 = 21 "what are the solutions??" b) find the x intercepts of f(x) = 3x^2 - 21 "the x intercepts are?"
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Question 357261
:
a) Solve 3x^2 = 21 "what are the solutions??"
b) find the x intercepts of f(x) = 3x^2 - 21 "the x intercepts are?"
Answer by
edjones(8007)
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a)
3x^2=21
x^2=7
x=sqrt(7), x=-sqrt(7)
.
b)
x intercepts are sqrt(7) and -sqrt(7)
.
Ed
.