Can someone help me solve this? x=-b/2a, for a?

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Can someone help me solve this? x=-b/2a, for a?

I need serious help=(

2007-09-23 07:40:56 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

4 answers

x=-b/2a
=> a =-b/2x

2007-09-23 07:44:36 · answer #1 · answered by harry m 6 · 0⤊ 0⤋

x = -b/2a (Multiply through by '2a'.
2ax = -2ab/2a (Cancel '2a' from right hand side)
2ax = -b (divide through by '2x')
2ax/2x = -b/2x (cancel '2x' from left hand side)
a = -b/2x (the answer)

2007-09-23 07:47:08 · answer #2 · answered by lenpol7 7 · 0⤊ 0⤋

x = -b/2a
Multiply each side by (2a/1)

(2a)x = -b
Divide each side by 2x

a = -b/2x

2007-09-23 07:46:40 · answer #3 · answered by tazk 1 · 0⤊ 0⤋

we need to know what x is or we cant find a -.- and vice versa

2007-09-23 07:44:48 · answer #4 · answered by ? 3 · 0⤊ 0⤋