Which equation is quadratic in form? 2(x + 5)2 + 8x + 5 + 6 = 0
x6 + 6x4 + 8 = 0
**7x6 + 36x3 + 5 = 0**
4x9 + 20x3 + 25 = 0

the answer is b

Step-by-step explanation:

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: