Factor the polynomial completely. If the polynomial cannot be factored, write prime.
25x^2 - 36
(5x - 6)^2
(5x + 6)^2
(5x + 6)(5x - 6)
prime
2007-07-24 11:09:34 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
This expression is the difference of two squares (DOTS). So to factor a DOTS you start with two parenthises. () () In the beginning of each you put the sq rt of the first term. (5x ) (5x) Then at the end of each you put the sq rt for the second term. (5x 6)(5x 6) Lastly, you put an addition sign in one of the parenthises and a subtraction sign in the other, getting the answer of (5x+6)(5x-6).
2007-07-24 11:24:17 · answer #1 · answered by girl person 2 · 0⤊ 0⤋
Thats right
The right answer is the third
25x2-36 = (5x+6)(5x-6)
In factoring Its called squares difference and is one of the easiest case
2007-07-24 18:26:09 · answer #2 · answered by skywalkeresearcher 3 · 0⤊ 0⤋
25x^2 - 36 = (5x)^2 - 6^2 = (5x + 6)(5x - 6)
2007-07-24 18:12:49 · answer #3 · answered by oregfiu 7 · 0⤊ 0⤋
25x² - 36
This is the difference of two squares.
The identity, (a²-b²) = (a+b)(a-b) can be used.
Hence,
25x²- 36 = (5x)² - (6)² = (5x+6)(5x-6).....Ans
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2007-07-24 19:15:24 · answer #4 · answered by Joymash 6 · 0⤊ 0⤋
25x^2-36
or (5x)^2-(6)^2
or (5x-6)(5x+6)------using a^2-b^2=(a-b)(a+b)
so (3) is the right ans
2007-07-24 18:41:50 · answer #5 · answered by MAHAANIM07 4 · 0⤊ 0⤋