Question

if a+b=9 and ab=18,find a-b

Answer 1

Heya mate,

Here's your answer

=> just use the (a-b) whole square property!

Hope it helps you!

Plz mark my answer as branliest ☺️❤️

Answer 2

$a + b = 9 \\ a = 9 - b \\ (9 - b)b = 18 \\ 9b - {b}^{2} = 18 \\ {b}^{2} - 9b + 18 = 0 \\ {b}^{2} - 6b - 3b + 18 \\b(b - 6) - 3(b - 6) = 0 \\ b = 3 \\ b = 6$

HOPE HELP YOU