Please explain
2007-11-20 12:50:22 · 4 answers · asked by Bobby S 3 in Science & Mathematics ➔ Mathematics
5a + 2b = 0 so a = - 2b / 5.
ab = -10 so substitute -2b / 5 for a to get
2 b^2 / 5 = 10
this simplifies to
b ^ 2 = 25
with the answers
b = +5, -5
Plugging these back into our first equation yields
a = -2, +2
So the greatest possible value for "a" appears to be +2.
2007-11-20 12:55:04 · answer #1 · answered by jgoulden 7 · 2⤊ 0⤋
5a + 2b = 0 or 2b = -5a now, ab =-10 so x the two components through two --> 2ab = -20 or 2ba = -20 yet on the impressive, we reported 2b = -5a that enables you to re-write 2ba = -20 as -5aa = -20 (aa is a squared) divide the two components through - 5 to offer aa = 4 so a = the sq. root of four so a is the two 2 or -2 consequently the suitable achieveable value of a is two.
2016-10-17 13:47:18 · answer #2 · answered by ? 4 · 0⤊ 0⤋
b=-5
a=2
2007-11-20 12:53:21 · answer #3 · answered by UNIQUE 3 · 1⤊ 0⤋
0 zero
2007-11-20 12:53:27 · answer #4 · answered by randomsurfchick 2 · 0⤊ 1⤋