Question

Findthe valued the polynomial 5x-4x^2+3, when x=2​

Answer 1

Question :-

find the value of the polynomial 5^x -4x^2 +3 when. x=2

Answer :-

Given ,

• 5x^2 -4x^2 + 3
• when x =2

How to find it ?

=> we can find it only by putting 2 in the place of X .

Solution :-

p(X)=5x^2 -4x^2 +3

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

=>p(2) = 5-3+2^2 + 3

=> 5-3×4+3

=> 5-12+3

=> -4

so, p(2)= -4 .

Answer 2

Solution

Given,

• 5x-4x^2+3
• when x= 2

To find ,

• we have to find the value of the polynomial .

So,

• we have to put the value of "x" in the above equation .

like this ,

$= > 5(2) - 4(2) ^{2} + 3$

$= > 10 - 4 \times 4 + 3$

$= > 10 - 16 + 3$

according to the BODMAS rule we have did here the addition first and then the subtraction

$= > 10 - 19$

$= > - 9$

The required answer is -9 .