Question

find the value of the following expression
$5x ^{2} - 6x + 1$
when x=4​

Answer 1

given expression = 5x² -6x + 1

putting x= 4

then,

5 × 4² - 6 × 4 + 1

= 5 × 16 - 24 + 1

= 80 - 23

= 57

Answer 2

Answer:

5x^2 - 6x + 1

=> when x = 4

= 5(4)^2 - 6(4) + 1

= 5(16) - 24 + 1

= 80 - 24 + 1

= 81 - 24

= 57----------ANS.....