Question

x^2-2x=9

Answer 1

Let's solve your equation step-by-step.
x2−2x=9
Step 1: Subtract 9 from both sides.
x2−2x−9=9−9
x2−2x−9=0
Step 2: Use quadratic formula with a=1, b=-2, c=-9.
x=
−b±√b2−4ac
2a
x=
−(−2)±√(−2)2−4(1)(−9)
2(1)
x=
2±√40
2
x=1+√10 or x=1−√10
Answer:
x=1+√10 or x=1−√10

Answer 2

Hint: Try using the quadratic equation to solve / factor this one.

Answer 3

Still need help?

Answer 4

yess, its confusing

Answer 5

what are your own thoughts about solving this problem? Which methods have you used before? quadratic equation? factoring? Graphing?

Answer 6

what confuses you ?