If r-r be given by f(x)x^2+3 find x where f(x) =28
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Answer:
x=+5,-5
Step-by-step explanation:
R-------->R
f(x)= x^2+3
A. T. Q.
f(x)=28
x^2+3=28
x^2=28-3
x^2=25
x=+5,-5
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