If using the method of completing the square to solve the quadratic equation x^2-2x-36=0x 2
−2x−36=0, which number would have to be added to "complete the square"?

i not know

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

it is 570

step-by-step explanation: