+456 The solutions to
2x^2 - 10x + 13 = -6x^2 - 18x - 15
are a+bi and a-bi, where a and b are positive. What is a\cdot b?
+122 8x^2 + 8x + 28 = 0
set into quadratic equation ==>
-8 +/- sqrt (64-4 (a) (28) ) / 16 ==> - 1 - i sqrt(13) / 2 or -1 + i sqrt (13) / 2
a = 1 , b = sqrt 13
