Math Help

Posts Tagged ‘Math Help’

Question: Math Matrices (matrix) Problem?

i have this question and ive been stuck on it for ever i just don’t understand it can someone help me out!

Find the value of K

K[ 3 , -1 ] = [ -3/4 , 1/4 ]
–[ 5 , -4 ]—-[ -5/4 , 1 ]

Answer: Bring the K inside the matrix and then pick any element to solve
[ 3K -K ] =
[ 5K -4K ]

[ -3/4 1/4]
[ -5/4 1 ]

3K=-3/4
K=-1/4

Algebra – Matrices – Gauss Jordan Method Part 1 Augmented Matrix

Question: Can someONE hELP ME ON A Couple of math questions.Factoring Polynomials?

Divide.
(3a^3 + 6a^2) divided by 3a

3a3 + 6a2 – 3a

3a3 + 6a2 + 3a

a2 + 2a

a2 + 6a2

5. Determine whether the polynomial is a perfect square and if it is, factor it.
n2 – 6n + 9

not a perfect square

is a perfect square: (n + 3)2

is a perfect square: (n – 3)2

is a perfect square: (n – 6)2

6. Determine whether the polynomial is a difference of squares and if it is, factor it.
y2 – 25

not a difference of squares

is a difference of squares: (y – 5)2

is a difference of squares: (y + 5)(y – 5)

is a difference of squares: (y + 5)2
thanks you guys

Answer: Divide.
(3a^3 + 6a^2) divided by 3a
= 3a³/3a + 6a²/3a
= a² + 2a

5. Determine whether the polynomial is a perfect square and if it is, factor it.
n² – 6n + 9
middle term = – 6n
= 2 ×√n³ × √9
= ± 2 × n × 3 = ± 6n
as middle term is – 6n it is a perfect square.
= (n – 3)²

6. Determine whether the polynomial is a difference of squares and if it is, factor it.
y² – 25
= (y)² – (5)²
= (y + 5)(y – 5)
is a difference of squares: (y + 5)(y – 5)
—-

Math Fractions & Equations : Factoring Trinomials

Question: Math Help! Calculate using long division?

I know how to do it but i keep getting the wrong answer, hopefully someone could show me how to do it and i can figure out where i’m going wrong.

(3x^3 – 4x + 5) ÷ (x-2)
Wow! thanks so much for writing it out for me vadersdemise_93, appreciate it

Answer: Hey!

I solved the problem for you on a piece of paper so you could see how to work it out! I also explained the steps.

Here is the picture!

http://img809.imageshack.us/f/1021001948.jpg/

Good luck!

Secret Trick : Math Division Long