*You may also come across construction type problems that deal with area or geometry problems that deal with right triangles.*Lucky for you, you can solve the quadratic equations, now you just have to learn how to apply this useful skill.Quadratic equations are also needed when studying lenses and curved mirrors.

*You may also come across construction type problems that deal with area or geometry problems that deal with right triangles.*Lucky for you, you can solve the quadratic equations, now you just have to learn how to apply this useful skill.Quadratic equations are also needed when studying lenses and curved mirrors.

Just don't forget that when you solve a quadratic equation, you must have the equation set equal to 0.

Therefore, we had to subtract 20 from both sides in order to have the equation set to 0.

Let's take a look at the picture "in our mind" again. This is the calculation for when the ball was on the ground initially before it was shot.

This actually never really occurred because the ball was shot from the cannon and was never shot from the ground. The other answer was 2.54 seconds which is when the ball reached the ground (x-axis) after it was shot.

Now you have to figure out what the problem even means before trying to solve it.

I completely understand and here's where I am going to try to help!

Many textbooks still engineer their exercises carefully, so that you can solve by factoring (that is, by quickly doing the algebra).

However, heavy dependence on calculators is leading more texts to create "interesting" (that is, needlessly complicated) exercises, so some (or all) of your exercises may involve much more messy computations than have been displayed here.

This is the best book that can be recommended for the new A Level - Edexcel board: it covers every single topic in detail;lots of worked examples; ample problems for practising; beautifully and clearly presented.

Don't be surprised if many of your exercises work out as "neatly" as the above examples have.

## Comments Solving Quadratic Word Problems

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