(x+4)(x+5)

Question

(x+4)(x+5)

anonymous · Answer

Do you want to foil it?

(x+4)(x+5) = (x*x)+(x*5)+(x*4)+(4*5)

anonymous · Answer

x=-5and -4

anonymous · Answer

it just asks to multiply

anonymous · Answer

To multiply, simply what I wrote down

anonymous · Answer

how would I correctly right that as in answer

anonymous · Answer

it on mathlab

anonymous · Answer

Exponents with the highest answer first, so ex:

x^2+2x+1

anonymous · Answer

x^2 has exponent of 2, 2x has a exponent of 1 since 2x^1 = 2x, and 1 has an exponent of 1, but variables are written first

anonymous · Answer

On math lab, I would think has an exponent key, so it would show up as:

$$x^2+2x+1$$ <- this is not the answer, this is what it would look like.


Simplify it, and what do you get?

anonymous · Answer

I got x^2+9x+20

anonymous · Answer

That is correct

hero · Answer

Three ways to multiply binomials:

Example using distributive property:

(x + 3)(x + 1) = x(x + 1) + 3(x + 1)
                     = x^2 + x + 3x + 3
                     = x^2 + 4x + 3


Example using FOIL:

(x + 3)(x + 1) = (x*x) + (1*x) + (3*x) + (3*1)
                     =  x^2 + x + 3x + 3
                     = x^2 + 4x + 3


Example using top down method:
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