Question

The value of x2 +7 when x = - 4 is

Answer 1

Answer:

If x = -4 is the factor of x^2 + 7 then p(-4) =23

Step-by-step explanation:

Given :

$p (x) = x^2 + 7$

When x = -4

$p(-4) = (-4)^2 + 7\\ p(-4) = 16 + 7\\p (-4) = 23$

So, If $x = -4$ is the factor of$x^2 + 7$ then $p(-4) =23$

Answer 2

• We have to evaluate the above expression by using the given data.

               Given data:- $x=-4.$

                To find:- Value of the expression $x^{2} +7.$

               Solution:-  

• To solve the above equation we will follow the BODMAS rule.
• BODMAS is an order of mathematic operations.
• BODMAS rule is to be followed while solving expressions in mathematics. It stands for    

       B= bracket  

       O= order of power or rules      

       D= division            

      M= multiplication          

      A= addition          

      S= subtraction

     Now put the value xin the given equation we get,

       $x^{2} +7\\=>(-4)^2+7\\=>-16+7\\=>-9.$

      Hence we will get the value is $-9.$