x^2-7x+4
2006-12-17 10:18:44 · 5 answers · asked by AM07 1 in Science & Mathematics ➔ Mathematics
all real numbers! .
2006-12-17 10:21:21 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Well, I assume that you wanted us to solve for x...
so here it is:
I would use the Quadratic Formula -
x = [ -(-7) +/- â(49-16) ] / [ 2(1) ]
x = [ 7 +/- â(33) ] / 2
or
x = 7 / 2 +â(33) / 2
x = 7 / 2 - â(33) / 2
2006-12-17 10:39:51 · answer #2 · answered by Anonymous · 0⤊ 0⤋
x² - 7x + 4 = 0
Delta = 7² - 4.1.4
Delta = 49 - 16 = 33
x = (7 +/-\/33) : 2
x' = (7 + \/33) : 2
x" = (7 - \/33) : 2
D(f) = R, then x = (7 +/- \/33) : 2
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2006-12-17 10:25:54 · answer #3 · answered by aeiou 7 · 0⤊ 1⤋
As a function, all numbers
2006-12-17 10:21:30 · answer #4 · answered by arbiter007 6 · 0⤊ 2⤋
(-infinity, infinity)
2006-12-17 10:40:14 · answer #5 · answered by teekshi33 4 · 0⤊ 0⤋