Question

If x=2 then 2x^2 - 5x + 8 is​

Answer 1

Answer:

The value of $2 {x}^{2} - 5x + 8$ is 6 .

Step-by-step explanation:

Given -

$x = 2$

we have to find out the value of

$2 {x}^{2} - 5x + 8$

Equation is,

$2 {x}^{2} - 5x + 8$

Put the given value of x in this

$= 2 \times {2}^{2} - 5 \times 2 + 8$

Square means the multiply the given value with itself twice.

${2}^{2} = 2 \times 2 = 4$

$= 2 \times 4 - 5 \times 2 + 8$

$= 8 - 10 + 8$

According to BODMAS rule, first add then substract.

$= 8 - 2$

$= 6$

Hence ,

The value of $2 {x}^{2} - 5x + 8$ is 6.