Explanation:
5x - 4x^2 + 3
Now, put x = 1
=> 5(1) - 4(1)^2 + 3
=> 5 - 4 + 3
=> 8 - 4
=> 4 Ans.
Answer:
f(x)=5x-4x²+3
f(1)=5×1-4×1²+3
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