Help me pls
5f + 2-4 = 2f -4f -8

8-4m-6m = 3m - 4m + 2

Step-by-step explanation:

5f+2-4=2f-4f-8

CLT

5f-2f+4f=-8-2+4

7f=-6

f= -6/7

8-4m-6m=3m-4m+2

CLT

-4m-6m-3m+4m=2-8

-9m= -6

m=2/3

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