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Question: Solve 3x+5=203x + 5 = 203x+5=20.
Answer: x=5x = 5x=5
speed=distancetime=10020=5 m/s\text{speed} = \frac{\text{distance}}{\text{time}} = \frac{100}{20} = 5 \text{ m/s}speed=timedistance=20100=5 m/s
Simplify x2−9x−3\frac{x^{2} - 9}{x - 3}x−3x2−9 and find 16×23\sqrt{16} \times 2^{3}16×23.
x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^{2} - 4ac}}{2a}x=2a−b±b2−4ac
Prices are 5and5 and 5and10 per pack, so $20 buys four.
Figure could not be displayed
Here is the parabola and a summary:
y=x2−4y = x^2 - 4y=x2−4
If you want to see what these look like in real life, try this:
Or for forces: