Question

. If f(x) = 5x² - 4x +3
Find f(1) + f(2)​

Answer 1

Answer:

f(1)=5(1)^2-4(1)+3

f(1)=5-4+3

f(1)=4

f(2)=5(2)^2-4(2)+3

f(2)=20-8+3

f(2)=15

f(1)+f(2)=4+15

Ans=19

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Answer 2

Answer:

1) f(x)=5×1-4×1+3=4

2) f(x)=5×4-4×2+3=15

adding 1 and 2

f(1)+f(2)=4+15=19