Question

If x = -2, then x 2 - 7x + 10 equals

A) 0
B) 20
C) 28

Answer 1

I think the answer is b

Answer 2

Answer: OPTION C

Explanation:

Given the quadratic equation
`x^2 - 7x + 10` and the value of the variable "x"
`x = -2`, you need to substitute the given value of the variable. Then:

`=(-2)^2 - 7(-2) + 10`

And finally, you need to evaluate.

Remember the multiplication of signs:

`(+)(+)=+\\(-)(-)=+\\(-)(+)=-`

Therefore, you get the following result:

`=4+14 + 10`

`=28`

This matches with the option C.