HELP
answer step by step:
-2 1/8-: 6 4/5

Exact Form:

−

5

16

Decimal Form:

−

0.3125

Step-by-step explanation: Reduce the expression, if possible, by cancelling the common factors.

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.

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