I have no idea lol. just want free points
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:
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Step-by-step explanation:
Answer:
7
Step-by-step explanation:
260-134=124
124 divided by 18 = 7
Answer:
-6x-14
Step-by-step explanation:
3(-2x-3)-5
-6x-9-5
-6x-14