Question

Q.8 Find the value of the polynomial 5x - 4x² +3 at x =2.
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Answer 1

Answer:

Step-by-step explanation:

$5x-4x^{2} +3$

given x=2

so substitute the x value in the above equation

5(2)-4(2)(2)+3

=10-4(4)+3

=10-16+3

=10-13

=-3

the value of the polynomial 5x-4x^{2} +3 is -3

Answer 2

Answer:

Value of polynomial $5x - 4x^{2} +3$ is $-3$.

Step-by-step explanation:

To find : value of polynomial $5x - 4x^{2} +3$

Given : $x = 2$

Solution :

• According to question we have find the value of given polynomial ,$5x - 4x^{2} +3$  by substituting the given value of $x$
• Therefore on substituting the values we perform arithmetic operations such as multiplication , addition and  subtraction to find the value of given polynomial .

         $5x - 4x^{2} +3\\\\5x - 4x^{2} +3\\\\= 5( 2 ) -4 (2)^{2} + 3\\\\ =10 - 4 (4)+ 3\\\\ = 10 - 16 + 3\\\\ = 10 - 13\\\\= -3$