How many solutions does 2(b+3)-17=3b-7+b

I really need help thanks!

One solution

Step-by-step explanation:

Group like terms:

:

Simplify:

Add 11 to both sides

Simplify: 2b=4b+4

Subtract 4b from both sides

Simplify: -2b=4

Divide

And finally, you get -2

Leave a brainliest if this helped!

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