Question

find the value of expression 5x2- 2, when x = 3​

Answer 1

Answer:

5x²-2

5(3²)-2 [x=3]

5*9-2

45-2

=43

Answer 2

Answer:

=> 43

Step-by-step explanation:

According to the data provided in the question,

We have to calculate the value of the expression,

Given that:-

$5x^2-2$

When, $x=3$

To find:- The value of the expression

Now, put x as 3 in the given expression, we get

=> $5x^{2} -2$

=> $5(3)^2-2$

=> $5\times 9 -2$

$=> 45 -2$

=> 43

Hence, the value of $5x^2-2$ is 43.