Question

Which expression is equivalent to x2 - 12x + 11?
O (x+11)(x + 1)
O (x - 11)(x+1)
O (x + 11)(x - 1)
o (x - 11)(x - 1)

Answer 1

Answer: o (x - 11)(x - 1)

Explanation:

You can find two values that has a sum of -12 and a product of 11:

$x^{2} -12x+11\\(x-11)(x-1)$

Or you can use the quadratic formula:

$\frac{-b+-\sqrt{b^{2} -4ac} }{2a}$

Where:

• a = 1
• b = -12
• c = 11