bewellplus.gsu.edu
Candie521 Candie521
  • 21-05-2014
  • Mathematics
Answered

Solve the following equation by transforming it into a perfect square trinomial.* 3x2 + 12x = 63

Verified Answer :

Lilith
Lilith Lilith
  • 21-05-2014

\(3x^2 + 12x = 63\\ \\3x^2+12x-63=0\\ \\3(x^2+4x-21)=0\\ \\3[x^2+4x+3x-3x-21] =0 \\ \\3[x^2+7x-3x-21] =0 \\ \\3[x(x +7 )-3(x+7)] =0\)

\(3 (x +7 ) (x-3) =0 \\ \\x+7=0 \ \ \ or \ \ \ x-3 =0\\ \\x=-7 \ \ \ or \ \ \ x=3\)
 

Answer Link

Related Questions

Czar Ivan the Terrible for blood instituted a reign of terror against the nobility of Moscow a digital b explicit c ambidextrous d rapacious
A shirt is reduced by 22 and now costs 1248 how much was it originally
write 171 miles in 3 hours as a unit rate
The Mycenaeans were located in this country
Use relative pronouns to join the two sentences a I cant find the USB drive It has the photos for our science project b I like to visit monuments They are diffe
what bodies of water is floridas eastern border and western border
A bag contains 8 yellow marbles 16 red marbles 3 blue marbles and 3 black marbles What is the probability of drawing a black marble out of the bag
Help Give me 4 example of gain independence from the family unit that is stupid dangerous things teenagers do
What was Charles Darwins contribution to the theory of evolution
Xrays take pictures of Your insides bones and organs Luggage contents Art and statues All of the above