What is the expression in factored form?
9x^2-4
Please explain if you can.
Thanks.

Question

What is the expression in factored form? 
9x^2-4
Please explain if you can.
Thanks.

alexandriadol · Answer

9*9 = 81
81-4= 77




so you solve piece by piece

masonsurfs · Answer

Okay what do I do next? @alexandriadol

alexandriadol · Answer

the equation would be

9*9-4

masonsurfs · Answer

That is the factored form?

masonsurfs · Answer

@alexandriadol

masonsurfs · Answer

So far I think the factored form is (3x-2)(3x+2)?

alexandriadol · Answer

yep the factored form is 
9*9-4

masonsurfs · Answer

Because 3x*3x is 9x and -2*2 is -4

alexandriadol · Answer

oh, I may be wrong then

masonsurfs · Answer

Okay

563blackghost · Answer

@masonsurfs is correct though it be best to show on how you got it

masonsurfs · Answer

What is the expression in factored form? 
9x^2-4

563blackghost · Answer

$\huge\bf{9x^{2}-4}$

`9` is a perfect square number (meaning it has a factor that multiplies with itself to equal 9) `3 x 3` equals `9` and x^2 can only be made by multiply x by x. `In order to achieve a negative number you multiply a positive with a negative` thus being 2 and -2. So your factored form is...

$\huge\bf{(3x+2)(3x-2)}$

masonsurfs · Answer

Great thank you for explaining @563blackghost

563blackghost · Answer

no problem :)