Solving Quadratics Trinomial Dots

Factor completely
n² + 16n + 63

• (n-7)(n+4)

• (n+7)(n-9)

• (n-3)(n-10)

• (n+7)(n+9)

What type of equation is graphed ?

• linear

• quadratic

• exponential

• constant

Tags

CCSS.HSF-IF.C.7A

Given a graph, how can you find the "solutions" to a quadratic?

• Call a friend

• Plug into a calculator

• Solutions are where the quadratic crosses the x-axis

• Magic 8 Ball -_-

Mini Lesson: To factor a trinomial of the form x²+bx+c, you must find two integers that ​ (a)   and ​ (b)   . (10 points)

• add to "b"

• multiply to "c"

• subtract to "b"

• add to "c"

• multiply to "b"

• divide to "b"

• divide to "c"

• subtract to "a"

x² + 7x + 12

What two integers have a product of 12 and a sum of 7? (10 points).

• 2

• 3

• 4

• 5

• 6

Factor k²+7x+10

• (k+2)(k+5)

• (k-2)(k-5)

• (k+10)(k+4)

• (k+2)(k-5)

Summarize: (10 points)

See Photo

Factor
x² -16x + 48

• (x - 12)(x - 4)

• (x + 6)(x - 8)

• (x + 12)(x - 4)

• (x -16)(x - 3)

In the equation  (x + 2)(x - 3) = 0, the binomials are called...? (3 points)

• Factors

• Products

• Multiples

• Zeros

Tags

CCSS.HSA.APR.B.2