Which number is missing in the last step? the first few steps in solving the quadratic equation 8x2 + 80x = -5 by completing the square are shown 8x2 + 80x = -5 8(x2 + 10x) = -5 8(x2 + 10x + 25) = -5+ 0 -200 0 -25 0 25 0 200

i dont understand

step-by-step explanation:

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

$450 i think. hope this ☺

the first option i believe

step-by-step explanation: