Answer: The answer comes out with three but you can take off the 5 i suppose.
-0.375
Explanation:
2x2+8x-1=0
Step 1: Multiple: 2x2=4 / 4+8x-1=0
Step 2: Combine like terms: 4+(-1)=3 / 3+8x=0
Step 3: Subtract 3 from both sides: 3-3=0 and 0-3=-3 / 8x=-3
Step 4: Divide both sides by 8: 8x/8 -3/8=-0.375
Step 5: -0.375