8 Wed 6-3 Skil Plan W102 x DL-Diagnosticarena
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M Do Now#6/3 (project 8 XL)-en x
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I DL-Diagnosticarea
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TUE 526 IXL DAY 1
20+
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18
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15
10
19
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1
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16 17 18 19 20
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7
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18
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idk this answer sorry cant on this one.

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15