Which expression is equivalent to x^4 + 4x^2 - 45?

Step-by-step explanation:

The given expresion is

We can rewrite this as:

We obtained a quadratic equation in x²

Let us split the middle term to get:

We factor by grouping to get:

We factor further to get:

The correct answer is A.

45

step-by-step explanation:

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.