Please help me on #37. I know for A you would use the quadratic equation but I got the wrong answer.

Mathematics

1 answer:

ozzi3 years ago

6 0

Δ = (8i)^2 - 4*(-25) => Δ = -36 +100 => Δ = 64 => x1 =(-8i + 8)/2 => x1 = -4i +4;
x2 = (-8i - 8)/2 => x2 = -4i-4; in this case, your solutions are complex conjugates.

You might be interested in

Please do the 3 questions show work if needed

pishuonlain [190]

Answer:

100-11=89

Step-by-step explanation:

6 0

3 years ago

Find the gradient of line ab

ziro4ka [17]

Please give more clear explanation for this question so I can help you.

4 0

2 years ago

The difference between rational and irrational

makvit [3.9K]

Answer:

Every integer is a rational number, since each integer n can be written in the form n/1. For example 5 = 5/1 and thus 5 is a rational number. However, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

Step-by-step explanation:

smartness bc i love math

3 0

2 years ago

Read 2 more answers

A tile installer charges $12 per square foot to install floor tile. What is the cost to install tile in a room of the size shown

babunello [35]

Answer: $480.00

Step-by-step explanation:

6 0

3 years ago

What is the square root of -1

Romashka [77]

Answer:

Step-by-step explanation:

Now, before you think I'm just stealing points, let me explain. The square root of a number is the number that, if you multiply it by itself, it equals that number. The square root of 4 is 2, because 2 * 2 = 4.

Also, a negative number times another negative number, is a positive number. -2 * -2 = 4

With both of those true, then what number could be multiplied by itself to equal a negative number? i.

i is a weird number that I don't really know how to explain all that well. I am sorry, but that is all that I can give you. i is very complex and has various different equivalents, and different meanings, but i is equal to $\sqrt{-1}$ .

Hope that this helps!

3 0

2 years ago