Question

How many solutions does X^2 - 9x = -11 have?

Answer 1

2 solution

Step 1: Subtract 11 from both sides.

x²9x-11=11-11

x² - 9x - 11 = 0

For this equation: a=1, b=-9, c=-11

1x² + -9x + -11 = 0

Step 2: Use quadratic formula with a=1,

b=-9, c=-11.

X = - b ± √b² - 4ac

2a

X = -(-9) ± √(-9)² - 4(1)(-11)

2(1)

X =

9+√125/ 2

9/2 5/2 √5 or x = 9/2 -5/2 + -5/2 √5

Answer 2

this is the answer Hope's it helps