Question

find the value 5x-4x2+3,at x =1​

Answer 1

For finding the solution ; we just need to put up the value of x that is already given in the equation.

Solution :

$\sf{p(x) = 5x - {4x}^{2} + 3}$

We have been told that the value of x is 1 so we will put up 1 in place of x everywhere in the equation.

$\longrightarrow{\sf{p(1) = 5(1) - 4{(1)}^{2} + 3}}$

$\longrightarrow{\sf{p(1) = 5 - 4(1) + 3}}$

$\longrightarrow{\sf{p(1) = 5 - 4 + 3}}$

$\longrightarrow{\sf{p(1) = 1 + 3}}$

$\longrightarrow{\sf{p(1) = 4}}$

Answer 2

Answer:

Given:

• 5x - 4x² + 3, at x = 1.

Find:

• Find the value.

Calculations:

⇢ p(x) = 5x - 4x² + 3 -------- Eq (1)

Substitute value (x = 1) in eq(1), we get:

⇢ p(1) = 5(1) - 4(1)² + 3

⇢ 5(1) = 5 - 4(1)² = 4 + 3

⇢ 5 - 4 + 3

⇢ 4

Therefore, the value is 3.