Please help me with these. I need them answered quickly I will give brainliest and 20 points to the person who solves this. Please I need help. There are 4 problems please solve them all.

-7.

Step-by-step explanation:

When x = -7 the denominator on the left side = 0 so the expression becomes undefined so the identity becomes false for this value of x.

Similarly for the second part:

x = +/- 5 would make it False.

For the third part

1 + x^2 must be equal to 0:

x^2 = -1

x = +/- √(-1)

x = i, -i.

u rich

step-by-step explanation: