Question

Solve. x2 + 8x + 25 = 0
please show work...ty

Answer 1

if you aren't very good at factoring......have you heard of the quadratic equation?

Answer 2

\[\frac{ -b \pm \sqrt{b² - 4ac} }{ 2a }\]

where
a = coefficient of first term = 1
b = coefficient of second term = 8
c = third term = 25

plug those into that equation and simplify

hint****if you aren't dealing with complex numbers yet....then there is no answer

√8² - 4(1)(25)
√64 - 100
√of a negative number is...a complex number

again...if you arent dealing with these yet...then there is no solution

Answer 3

i got –4 ± i

Answer 4

Use the quadratic formula, where:
a = 1, b = 8, c = 25
-8 +- sqrt(8^2 - 4(1)(25))/2(1)
-8 +- sqrt(64 - 100)/2
-8 +- sqrt(-36)/2
Now we have a negative in our square root, so factor out an imaginary.
-8 +- i*sqrt(36)/2
Continuing: -8 +- 6i/2
-4 +- 3i
So your answer is -4 +- 3i

Answer 5

but its wrong...what did I do wrong
i forgot to bring down the negative but I missed a whole step...ty ..watavi

Answer 6

If you could show your work for what you did, I could help you