anonymous
  • anonymous
what are 2 binomials whose product is x^2-25?? please help
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Difference of squares. \[a^2-b^2=(a+b)(a-b) \]
anonymous
  • anonymous
Ok so what would that make the binomials?
anonymous
  • anonymous
I just hate binomials i can't ever get them.

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lgbasallote
  • lgbasallote
a+ b <---first binomial a - b<---second binomial just substitue a and b to the right values
anonymous
  • anonymous
Yes that's what I am having trouble finding though. Because the question states write 2 binomials whose product is x squared - 25
anonymous
  • anonymous
I have no clue, i know that sounds stupid
anonymous
  • anonymous
I just hate doing math anyways so it's confusing to me even when i do binomials.
lgbasallote
  • lgbasallote
okay here's a hint \[a^2 - b^2 \implies (a+b)(a-b)\] so \[x^2 - 4 \implies (x + 2)(x-2)\] \[x^2 - 9 \implies (x+3)(x-3)\] \[x^2 - 16 \implies (x+4)(x-4)\] are you getting it now?
anonymous
  • anonymous
so a bionomial for x squared -25 could be (x+5)?
lgbasallote
  • lgbasallote
yes that's one of the binomials...what's the other?
anonymous
  • anonymous
would it be (x-5)?
lgbasallote
  • lgbasallote
yes. the binomials for x^2 - 25 is (x+5)(x-5) congrats
anonymous
  • anonymous
well see when i typed that in my program on my computer i have to do this math on it said it was incorrect
lgbasallote
  • lgbasallote
that's why i hate those computers lol. so picky
lgbasallote
  • lgbasallote
try putting them in one by one
anonymous
  • anonymous
i did i tried the x + 5 first
lgbasallote
  • lgbasallote
shouldnt make a difference but...try putting x-5 first?
anonymous
  • anonymous
Should I put the ( ) or not?
anonymous
  • anonymous
and it says type your answer in factor form so what would that be
lgbasallote
  • lgbasallote
(x+5)(x-5)
lgbasallote
  • lgbasallote
^factor form
anonymous
  • anonymous
so the (x+5)(x-5) is factor form?
lgbasallote
  • lgbasallote
yes (x+5)(x-5) is factor form...
anonymous
  • anonymous
can i ask you another math question
lgbasallote
  • lgbasallote
sure
anonymous
  • anonymous
The number of ways a teacher can award different prizes to 2 students in class having n students is given by the formula p(n)=n(n-1)
anonymous
  • anonymous
use this formula to determeine the number of ways a teacher can award different prizes to 2 students in a class having 6 students
lgbasallote
  • lgbasallote
substitute 6 into n in the formula
anonymous
  • anonymous
then it says to rewrite the formula by multiplying the factors
lgbasallote
  • lgbasallote
yes. substitute 6 into n in the formula...
anonymous
  • anonymous
ok so the formula would be P(6)=6(6-1)?
lgbasallote
  • lgbasallote
yes
anonymous
  • anonymous
just a couple more questions i promise
anonymous
  • anonymous
when i tried typing that the other way it said multiply the two factors of the expression for p(n) given in the problem statement to write the expression in a different way
lgbasallote
  • lgbasallote
i dont get what you're asking
anonymous
  • anonymous
It's just saying to rewrite the formula in a different way
anonymous
  • anonymous
by multiplying the factors
lgbasallote
  • lgbasallote
just substitute 6 into n...isnt that what you did?
anonymous
  • anonymous
Yea i did that for the first answer but it's not right for the second one
lgbasallote
  • lgbasallote
now multiply
lgbasallote
  • lgbasallote
simplify it
anonymous
  • anonymous
so the answer would be 30 right that simplified
anonymous
  • anonymous
but that's not the formula
anonymous
  • anonymous
can i give u my math xl login info and let you look at it?
lgbasallote
  • lgbasallote
the formula is what you wrote first
lgbasallote
  • lgbasallote
the simplified is the second answer
anonymous
  • anonymous
So the first formula was p(n)=n(n-1) then it was P(6)=6(6-1) then it was P(6)=6(5) and then P(6)=30
lgbasallote
  • lgbasallote
yes
anonymous
  • anonymous
But when it said to multiply factors and write the formula over I have no idea
lgbasallote
  • lgbasallote
multiply the factors means you multiply the factors <--that will give you 30 write the formula over is just copying the formula but substitute 6
anonymous
  • anonymous
ok so my answer box already has P(N)= so i need to put 6 X 5
lgbasallote
  • lgbasallote
if the start is p(n) = then you rewrite the formula... n(n-1)
anonymous
  • anonymous
omg it said it wasn't in correct form that time but it was correct
lgbasallote
  • lgbasallote
lol. these computers are confusing me now o.O
anonymous
  • anonymous
I know right I don't know how to put it
lgbasallote
  • lgbasallote
me neither.
lgbasallote
  • lgbasallote
sorry kid. cant help you with your computer problems.
lgbasallote
  • lgbasallote
i have to go now so i wish you luck that you finish this
anonymous
  • anonymous
thanks soooo much for your help
lgbasallote
  • lgbasallote
welcome

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