Can someone me on this problem? i don’t understand

  A = -9, B = 65

Step-by-step explanation:

Take the square root of both sides of the equation:

  h + 9 = ±√65

Subtract 9 from both sides of the equation:

  h = -9 ± √65

Comparing this to the form

  h = A ± √B

we see that A = -9 and B = 65.

A lot of math is about matching patterns of numbers and variables. Here, you're asked to match the expression -9±√65 to the pattern A±√B and identify the values for A and B that make these expressions identical.

It should not be difficult to see that the stuff on the left side of ± is the value of A. That stuff is -9.

The stuff under the radical is the value of B. That stuff is 65.