Question

2.x+ 9 = 19
$2x + 9 = 19$
​

Answer 1

Answer:

 p. 212 # 7, 8, 11, ... If x2 = k, then x = ± sqrt(k). Example 2. x2 - 9 = 0. x2 = 9. x = 3, or x = -3. ... x + 3/2 = ± sqrt(19/4) = ± sqrt(19)/2

I HOPE IT HELPS YOU

PLEASE FOLLOW ME