Could you help me with this Maths question?

Question

Example:

(x+2) (x+4)

I thought it was : x[squared] + 2 + 8 ??

If I'm wrong, could you tell me the answer and take me through the steps of how you worked it out please?

Answer 1

Expand and Simplify the following expression...

(x+2)(x+4)

First: eliminate parenthesis; use the Foil Method.


(x)(x)+(x)(4)+(2)(x)+(2)(4)

x^2 + 4x + 2x + 8

Sec: combine "like" terms - combine terms with the same variable "x"

x^2 + 6x + 8

Answer 2

For this problem you have to use FOIL, which stands for First Outside Inside and Last. So first you take the firsts in each set of parenthases which are x and x and multiply them. Next you multiply the outsides, x and 4. Then you multiply the insides, 2 and x. Finally you multiply the Lasts, 2 and 4. After doing all that you get x squared, 4x, 2x, and 8. You add all those together to get x[squared] + 6x + 8.

Answer 3

The person above is correct. You need to take the first two of each equation=x squared. Then take the first number of the first part and combine with the second number of the second part (the x and the 4 put together is 4x). Then take the first number of the second part (x) and combine with the second number of the first part (2)=2x. Then take the second numbers from both (2) and (4) and multiply those to get 8.

So after combining you are left with x squared+2X+4X+8

After you add the like terms 2X and 4X you get the 6X so the ending equation is 2 Squared+6X+8

Answer 4

Answer is x^2 + 6x + 8

You do x multiply x which is x^2

Then you just do x + 2 which is 2x...4 + x which is 4x and finally multiply 4 by 2 which gets you 8.

Soo... x^2 + 4x + 2x + 8...but then you add the 4x + 2x = 6x

I'll give another example.

(x+8) (x+4)

x^2 + 12x+ 32

Answer 5

(x+2) (x+4)=
=x^2 +4x + 2x + 8=
=x^2 +6x ++ 8

Answer 6

Step1
(x+4) should be multiplied by x
i.e x(x+4)= x^2+4x
Plus
step2
2 should be multiplied by (x+4)
i.e 2(x+4)= 2x+8

so the answer is x^2+4x+2x+8=x^2+6x+8

Answer 7

(x+2)(x+4)
First, multiply all parts, x times x, + x times 4+2times x, + 2 times 4.
x squared + 4x+2x+8
Then add 4x+2x, and you end up with x squared +6x+8
the answer is x squared + 6x+8

Answer 8

(x+2) (x+4)

x(squared) + 4x + 2x +8

x (squared) + 6x+ 8= the answer

Answer 9

(x+2)(x+4)

= x (x+4) + 2(x+4)
=x^2 +4x +2x + 8
=x^2 +6x + 8

With practice you multiply the x terms together 1x * 1x = 1x^2
Then you multiply the numbers with the x terms and add them together (taking into account - signs) 1x*4 + 1x*2 = 6x
Then multiply the numbers together (4*2) = 8 again taking into account any - signs and remember that - * - = +

Answer 10

(x + 2) (x + 4)
X^2 + 4x + 2x + 8
x^2 + 6x + 8