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Mathematics
Jacey Salas
26 September, 19:06
X^2 + 18x + 50 = 9
Solve by completing the square
+2
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Izayah Heath
26 September, 21:39
0
Step 1: both sides subtract 50: x²+18x=-41
step 2: both sides add (1/2 of 18) ², which is 81: x²+18x+81=-41+81
step 3: make the square: (x+9) ²=40
step 4: square root both sides: x+9=√40 or x+9=-√40
simplify: x=-9+2√10 or x=-9-2√10
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