How do you do this problem? What's the answer?
(sq root of 4x+1) multiplied by -(square root of x-2)
2007-12-18 10:45:02 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
(sq root of 4x+1) multiplied by -(square root of x-2)
= - (sq root of (4x+1) multiplied by (x-2))
= - (sq root of (4x^2 - 7x -2 ))
2007-12-18 10:56:40 · answer #1 · answered by Beardo 7 · 0⤊ 2⤋
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2016-10-03 06:29:24 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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2016-12-18 20:11:13 · answer #3 · answered by lueck 4 · 0⤊ 0⤋
You undo the square roots
(sq root of 4x+1)^2 multiplied by -(square root of x-2)^2
(4x + 1)(-x - 2)
= -4x^2 - 8x - x - 2
= -4x^2 - 9x - 2
Put to standard form and move everything to the other side because you want x^2 always positive
0 = -4x^2 - 9x - 2
4x^2 + 9x + 2 = 0
(x + 8)(x + 1) = 0
x = -8
x = -1
2007-12-18 10:55:02 · answer #4 · answered by Anonymous · 0⤊ 1⤋