Answer:

Step-by-step explanation:
x² + 2x = 6
Subtract both sides by 6.
x² + 2x - 6 = 0
ax²+bx+c=0
a=1, b=2, and c=-6
We can apply the quadratic formula.

Plug in the values.

Evaluate.



Answer:
70
Step-by-step explanation:
Complementary angles equal 90 degrees
90 - 20 = 70
I hope this helps!
Answer:
-1
Step-by-step explanation:
i think thats corrext
Answer:
0
Step-by-step explanation:
Anything times 0 is 0.
Answer:
the answers that are equivalent are a, b, and e