need asap
2007-07-31 07:58:33 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
5x - 7x² + x² =
Collecting like terms
5x - 6x² =
x(5 - 6x)
- - - - - -- -s-
2007-07-31 09:29:01 · answer #1 · answered by SAMUEL D 7 · 1⤊ 0⤋
I'm assuming that "7x2" is "7x^2", so all you're doing is still adding like terms. The 5x doesn't match up to any like term, so it stays the same. But the -7x^2 + x^2 does match, so add them and you get -6x^2. Add the 5x and you get a final answer of 5x - 6x^2, or if you wanted to factor it you would get an answer of x(5 - 6x)
2007-07-31 15:04:25 · answer #2 · answered by ? 2 · 0⤊ 0⤋
Is this x2+5x-14?
If yes, in order to find the roots you do
X^2 +5X-14 =0
X1 = -1
X2 = -4
FORMULA for real roots of this equation
X1= [-5+(5^2+4*14)^ (1/2) ]/2 =
= [-5+3]/2 = -1
X2= [-5-(5^2+4*14)^ (1/2)]/2 =
= [-5-3]/2 = -4
Otherwise
5x - 7x2 + x2 = 5x -6x^2 = x (5-6x)
the roots would be
x1=0
x2=5/6
To factor and simplify:
5x - 7x2 + x2 = 5x -6x^2 = x (5-6x)
2007-07-31 15:07:26 · answer #3 · answered by supergirl 5 · 0⤊ 1⤋
5x - 7x2 + x2
= 5x - 6x^2
= x(5 - 6x)
2007-07-31 15:02:02 · answer #4 · answered by fofo m 3 · 0⤊ 0⤋
5x - 7x^2 + x^2 =
x^2 - 7x^2 + 5x =
-6x^2 + 5x =
x(-6x + 5) =
x(5 - 6x)
2007-07-31 15:09:54 · answer #5 · answered by N E 7 · 0⤊ 0⤋
you have time to play ??
5x - 6x2 = x(5-6x)
2007-07-31 15:01:46 · answer #6 · answered by Anonymous · 0⤊ 0⤋