Question

I am extremley confused and have no idea how to solve this, can somebody explain to me?: -ax^2+2x+a-5 if a=7 and x=-5

Answer 1

when a = 7 and x = -5, the value is -183.

Explanation:

-ax^2 + 2x + a - 5

When a = 7 and x = -5, this becomes:

-7(-5)^2 + 2(-5) + 7 - 5

-7(25) - 10 + 7 - 5

= -175 - 8

= -183

Answer 2

Explanation:

To evaluate the expression -ax^2 + 2x + a - 5 when a = 7 and x = -5, we simply substitute these values into the expression and simplify:

-ax^2 + 2x + a - 5

When a = 7 and x = -5, this becomes:

-7(-5)^2 + 2(-5) + 7 - 5

Simplifying this expression using the order of operations (PEMDAS), we get:

-7(25) - 10 + 7 - 5

= -175 - 8

= -183

So, when a = 7 and x = -5, the value of the expression is -183.