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Notice also that 9x^2 is a square term and 16 is a square term, so you might be able to pick a factorization and check it. Maybe this could work:
F.O.I.L. Method,
Same as the trinomial expression found earlier, so you would have --------obviously .
After that, there are certain factoring patterns you should learn to recognize, so you can do the work faster.
Look at the first and last terms of your equation: 9x^2 and 16. Those are both perfect squares: 9x^2 = (3x)^2 and 16 = 4^2.
Then with a negative middle term, you only need to check to see if (3x-4)^2 gives you the correct middle term. It does... so Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website! Please help me solve the following:
Solve for x: 9𝑥^2 − 24𝑥 = −16
Thank you!
------ Replcing - 24x with - 12x - 12x
3x(3x - 4) - 4(3x - 4) = 0
3x - 4 = 0
3x = 4
BE AWARE: The answer IS NOT