Methods of Solutions 12-5
You have learned five different methods of solving quadratics.. picking the best one is the challenge
Here are some tips on when to use each method:
Quadratic Formula--> when to use: ax2 +bx + c = 0 (It always works) Great when you have a calculator
Factoring--> when to use: ax2 +bx + c = 0 you see the factors easily or you have ax2 +bx = 0
Using the Property of SQRT's --> when to use: ax2 + c = 0
Completing the square --> when to use: x2 +bx + c = 0 especially when b is even
Graphing... this really does takes time but if done correctly... it really shows what are the roots... and.... the x-intercepts, the solutions, the zeroes...
Which method would you use for the following?
x2 +5x - 6 = 0
Answer: Factoring
x2 -2x = 1
Answer: Completing the square
11x2 = 44
Answer: SQRTing
3x2 -5x = 4
Answer: Quadratic Formula
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