Question

Please tell answer with explanation​

Answer 1

Answer:

3x² - 4x² + 7x - 5

-x² + 7x - 5 ( x = 3 )

- ( 3 ) ² + 7 x 3 - 5

-9 + 21 - 5

12 - 5

7

The correct value is 7 .

Answer 2

Answer:

f(x)= 3

hence on substituting values we get,

3(3*3)-4(3*3)+7(3)-5

27-36+21-5 = 7

Hence answer is 7