Given f(x)=2x²-3,x belongs to R.
Find:
1)f(-2)
2)f(2a+1)
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Answer:
f(-2)=2(-2)^2-3
=2(4)-3
=8-3
f(-2)=5
f(2a+1)=2(2a+1)-3
=4a+2-3
f(2a+1)=4a-1
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