Question

x=8 [find the value of polynomials 5x-4x^2+3​

Answer 1

Step-by-step explanation:

if we put value of x in equation

40-32^2+3

40-1024+3

= -981

Answer 2

Answer:

value of polynomial , $5x -4x^{2} + 3$ is $-213$ .

Step-by-step explanation:

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

Given : $x = 8$

Solution :

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

         $5x -4x^{2} + 3\\\\ = 5 (8 ) - 4(8 )^{2} + 3\\\\= 40 - 4(64 )+ 3 \\\\= 40 - 256 + 3 \\\\= 40 - 253\\\\= - 213$