Solve the equation 2x^2+8x-1=o by completing the square. Give your answer to 2 decimal places

Step-by-step explanation:

Hello,

step 1 - we divide all terms by 2

step 2 - we complete the square

we can notice that

so

step 3 - we move the constant term to the right of the equation

step 4 - we take the square root on both sides of the equation

or

step 5 - we subtract 2 from both sides

or

so the solutions are 0.12 and -4.12

hope this helps

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following