Rearrange the equation by writing
x² + x - 90 = 0
x² + x = 90
x² + x + 1/4 = 90 + 1/4
Recall that (a + b)² = a² + 2ab + b². Then
x² + 2 • x/2 + (1/2)² = 361/4
(x + 1/2)² = 361/4
x + 1/2 = ± √(361/4)
x = -1/2 ± 19/2
x = 9 or x = -10
Answer:85.05
Step-by-step explanation:
Answer:
join
Step-by-step explanation:
meet./vyc-hwbw-svg
Answer:
The answer is 3/2x-3
Step-by-step explanation:
Distribute the + sign
3/4x-1+ 3/4x-2
Add like normal.
6/4x-3
simplify:
3/2x-3
Answer:
domain={8,7,6,5,4,3,2,1,0}