You are signing the number "22." What is the first thing you should do? O A extend your pinky and ring fingers to make an alternate "spelling" for "2" extend your pointer and middle finger to make the sign for "2" OC. extend your thumb and pointer finger to make the sign for "2" OD. D. extend your pointer fingers on each hand to create two "1's it's not actually math but yall dont answer when I put it in the sign language section

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step-by-step explanation:

your answer is the frist one

hop i

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