I think you have to find the value of x and y before u can simplify it.
-5 will be your answer. Hope this helps!
Answer:
x² - 20 = 0
Using the quadratic formula

a = 1 b = 0 c = -20
So we have

Hope this helps you.
Answer:
- yirsurusitr
Step-by-step explanation:
f
- fftzethatwtk
- dg5teyd5lwey Hrhht c.f.rsxtmrshzt fsfyrscytn
B) -8 + (-12)
Because you just have to use the distributive property and distribute -1 to (8+12)