If x ≠ -2, then 5x2 -20/5x+10 =

Step-by-step explanation:

So we have the expression:

For both the numerator and the denominator, factor out a 5:

The term in the numerator can be factored. This is the difference of two squares pattern:

Both layers have a 5(x+2). Cancel them, Since we know that x cannot be -2, we can safely do so:

And we're done!

Notes:

If we weren't told that x ≠ -2, then we cannot divide them because if x did equal -2, the equation would be undefined. However, since we were given that, we can simplify.

However, even if we weren't given x ≠ -2, we can still simplify, but we need to add the restraint ourselves. This must be done, or else the equation won't be correct.

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.