how do u facter the trinomial 16Xsquared - 24X+ 9 ???
I have been trying but i can't seem to get an answer that works! Please help! thanks.
heart you all ((*Ginger*))
2007-12-17 12:08:09 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(4x-3)(4x-3)
Yep... that works.
2007-12-17 12:11:44 · answer #1 · answered by ¿ /\/ 馬 ? 7 · 0⤊ 0⤋
First of all, this is NOT a trig question.
It's an algebra question.
We have this:
16x^2 - 24x + 9
Do you see 16?
Do you see the constant 9?
We multiply those two numbers first.
So, 16 x 9 = 144
Do you see -24?
Ask yourself: What two numbers when multiplied together will produce 144 but when added will produce -24?
How about -12 times -12?
Yes, -12 x -12 = 144 but -12 PLUS -12 = -24.
We have this:
16x^2 -12x -12x + 9
We now create two groups.
Group 1 = 16x^2 -12x
Group 2 = -12x + 9
We factor each group SEPARATELY or one at a time.
16x^2 -12x becomes 4x(4x - 3)
-12x + 9 becomes -3(4x - 3)
Final answer: (4x - 3) (4x - 3)
What does (4x - 3) (4x - 3) really mean anyway? Those are the two factors of your ORIGINAL trinomial. In other words, if you multiply (4x - 3) times (4x - 3), you will get your original trinomial as the product.
Got it?
2007-12-17 20:22:49 · answer #2 · answered by Anonymous · 0⤊ 0⤋
(4x-3)^2
2007-12-17 20:13:09 · answer #3 · answered by holdm 7 · 1⤊ 1⤋